Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f64092f7d15ba53…

MALICIOUS

PDF

88.1 KB Created: 2021-09-02 06:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 376e66cfddf5aea1344bf81ce4fb7e30 SHA-1: e2173d3a37c5938ff99afb2b7fb35d28f4cef1e6 SHA-256: 2f64092f7d15ba53c90ec3a92cb6417904d589eba0c2504fd17dda63e8b385c0
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to compromised CMS upload storage and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The document body is heavily obfuscated and unreadable, but the heuristics indicate a lure related to lottery prizes or parcel delivery, typical of advance-fee fraud schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/677a763d032284e161cdc7bb0cde563a/49100632083.pdf
    • http://geometramaurotozzi.it/userfiles/files/56937603003.pdf
    • http://china-zub.ru/userfiles/file/muzezufis.pdf
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/95c17e3d4c83b16f3ba0a3df007eb145/31845955587.pdf
    • https://indirimlipin.com/calisma2/files/uploads/41201454360.pdf
    • http://sccsfz.org/upload/2021-08/93230403408.pdf
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/55253692564.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce9eb667ca---lefopisopab.pdf
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/273b0cddbd29f3e427ebfd43ebc52762/80685880983.pdf
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/kjg9feptv27jo9e6qgg8ki0jf7/88173543798.pdf
    • https://stoneappeal.in/FCKeditor/file/37700426700.pdf
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/d35748c92b1f32795093b77bf2c75058/bukixamomufuleveg.pdf
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/3bku527g2f93mloikha880hb6p/78672628907.pdf
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/ab066aa3a42fe85eaf7fa8ae7ce30836/walitetopalupuxipivotudaw.pdf
    • http://eva.am/files/8eb4994097c39554.pdf
    • https://adamant54.ru/userfiles/files/bamofutazabeduji.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a6571aed4e1---46068411750.pdf
    • http://belst.by/upload/file/vomosiziwi.pdf
    • https://52fantasies.com/home/holly/public_html/ckfinder/userfiles/files/bowelegijipaxamuxiz.pdf
    • http://moscow-vernisage.com/files/files/vawadixadaribonoxika.pdf
    • http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/51302909483.pdf
    • http://scandirent-new.ru/uploads/assets/file/7132193728.pdf
    • https://franchisefarm.franchiseharbor.com/files/files/8076518870.pdf
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/ur0jpvm041u4na9lep1sl18geh/95722094141.pdf
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/e593ede8280856147ea38c5cdf1b54d5/23240202268.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=famous+all+star+cheerleaders
    • 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_off0000f178.bin
362501566eac5f4094bb804d2f56416dd8b26fb6ab75ef4bada4c6cb8884c0be
pdf-font-stream PDF embedded font (sfnt) at offset 0xF178 10516 bytes
font_01_sfnt_off00010974.bin
e42d69d26eac6782881b0188d5a25e5d56183ed1edc41684fa352162b8d1417c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10974 18420 bytes
font_02_sfnt_off000139a2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x139A2 16792 bytes