Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0ee7e519cfde64…

MALICIOUS

PDF

120.2 KB Created: 2021-07-19 05:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 114a1ff2183234a91bd27fa18ef98b96 SHA-1: 06236f5e10300db86d5bd8b472cc4ce3bdc60efc SHA-256: 6f0ee7e519cfde64aa7acff5166ab1ff596f6c4f21271669321ff59fefde0445
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, likely intended to redirect users to malicious content. The document body is unreadable, but the heuristic firings strongly suggest a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9267

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://beldaoyun.com/calisma2/files/uploads/51621930770.pdf
    • http://bandenplaats.nl/cmsimages/file/9084788335.pdf
    • http://gloucesterclassof81.com/clients/23558/File/waxaremulex.pdf
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/162a0262b96b01f29817547103f550cc/pasevof.pdf
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/ig4b8uof5lareqikl8795k6m0e/77291571692.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/4a894de775dff15455762f37e24aba7c/farusefiruwatiki.pdf
    • http://bilmatbasim.com/userfiles/file/damibegikewedile.pdf
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/a998ba7f67593ab88963a460b3f07dd0/ririviv.pdf
    • https://chptravel.ir/data/file/73444830636.pdf
    • http://soft-pro.hr/upload/datoteke/jufudapulewofawik.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081fcf7c058f---xekinef.pdf
    • http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/10087647850.pdf
    • http://www.hydro-tg.pro/upload/file/midenofosegeziver.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b0392bbd01f---bedijogemovobapelovakozu.pdf
    • http://tradeweb.es/userfiles/file/3031066943.pdf
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160b86716c5059---33351744400.pdf
    • http://formel1vermietung.de/userfiles/file/kivuzoxoxe.pdf
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8b7776ca2---99550580865.pdf
    • https://stayinbranson.com/ckfinder/triplebuserfiles/file/28109118613.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a37a89bbc---56564430070.pdf
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/2ktagla8551h4j7s3nftskampm/gifunib.pdf
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/1e61fc4baa389b4eb7f2469e09173dff/46061595350.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/apmtg131f5nsqd56qhk7vperf0/69955466535.pdf
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/40baab83d85bcb3844b9367be6cfaa0e/981586700.pdf
    • http://etcad.net/np/upfile/file/4086090631.pdf
    • http://pphu-joanna.pl/fckpliki/file/bonamu.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=metroid+prime+2+echoes+iso
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014b31.bin
a521196f5cfdde08d680847af17c5eb585b30ca232477e0422ac4ac205284692
pdf-font-stream PDF embedded font (sfnt) at offset 0x14B31 10580 bytes
font_01_sfnt_off00016360.bin
b9338d05c94eafc282673730a118d306b27ddca9ffdaefda0ef8399441510522
pdf-font-stream PDF embedded font (sfnt) at offset 0x16360 2980 bytes
font_02_sfnt_off00016fe9.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd
pdf-font-stream PDF embedded font (sfnt) at offset 0x16FE9 16092 bytes
font_03_sfnt_off0001852a.bin
df2a7dc48c4ba46ecfa271029503088068ac004d7354c5b4e519aac360914955
pdf-font-stream PDF embedded font (sfnt) at offset 0x1852A 20664 bytes
font_04_sfnt_off0001ba38.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA38 16792 bytes