Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fb54f1bf75029b…

MALICIOUS

PDF

91.4 KB Created: 2021-06-28 02:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f2455f326aa76a157e8cb9bafcfc1564 SHA-1: 53037767730d02f44003b161f2fd5e15b3bb16b0 SHA-256: 62fb54f1bf75029b32f381567b6e9ce58d525f365301cd9743f62a587e19b77f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of an advance-fee scam, presenting lures related to lotteries, prizes, or parcel deliveries. It contains numerous links, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/45f30dc35d3a1034d7000e89de3a03bb/1375400520.pdf
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/0788771f2569156ef6cf767744477aa3/lujififaminonogi.pdf
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a9780713a21---57290110885.pdf
    • https://netpage.info/userfiles/file/71415651638.pdf
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/669464e6ca7bed4c878a2fddf783a2e2/mowobuzuluzo.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607435f4a635f---morujarib.pdf
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a500f9e7bba---15566266779.pdf
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/712e8775f9da2f4d67dde1cda4e95415/zabuzuberifoxemi.pdf
    • http://toshiteriyakiburien.com/uploads/files/jigipuwuzomefelixuf.pdf
    • https://fobh.net/userfiles/files/ruwuvovamox.pdf
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160bb59ee4e59f---76168724471.pdf
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/240b1fd969bd39faeb7598e7f953726e/32030240133.pdf
    • https://renebeumer.nl/userfiles/file/witinavuxulub.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/m8hgfvh7aqkqp15ucg75euid7a/13786734625.pdf
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16087bbf2ac682---tefinuberofawusoni.pdf
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/9fabe7c8b35c2dfb5386b673074ac14f/45085844280.pdf
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/80b7be97e02308727839d24cc49cc442/jiwavolapuwatelemopepebe.pdf
    • https://batikatravels.com/userfiles/file/73359206562.pdf
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160997a509795f---29153171972.pdf
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b46d0fac60a---lezogakuxumojojinopuwozul.pdf
    • http://jfe.hk/userfiles/jiwuxagon.pdf
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16099e2a95fedc---nuluzujunujolisuj.pdf
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160864e6adc4fd---49627066092.pdf
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/c1baccbb1b8e2eda98733fd44b32f741/14220862787.pdf
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/39142d3db88b9134a1d28088d317ea69/rusokije.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=government+scholarship+2020
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608127171308b---39898544816.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff76.bin
e75477f2534e676f755415cc314d971f5d478bb2123b12b3bb6b2305bf86eab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF76 10984 bytes
font_01_sfnt_off000118da.bin
dcae01c7b5bc0395f3d7dddb1fd9a0446ef274149e09fc5bc499e8bdd6ef247f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118DA 17728 bytes
font_02_sfnt_off00014650.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14650 16792 bytes

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