Malicious PDF — malware analysis report

Static analysis result for SHA-256 627e4877175b22d7…

MALICIOUS

PDF

79.1 KB Created: 2021-06-19 20:34:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0915afc1e063b65b26aa3d17118b8cb1 SHA-1: 073d1d0a22ede9e0b753f4ef8dad142951cc72f8 SHA-256: 627e4877175b22d758e3b42680f29b80b8297268ae789c029c3df12e4fae0d8b
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9080

Heuristics 5

  • 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
  • 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://allytemp.ru/uplcv?utm_term=spb+namo+namo+narayana+mp3+song PDF link annotation
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b0af601f076---fakuzuganoxedet.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/dc23dh05gegum0mcc4ir3d6q2j/77229447949.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/2jas41addbm2felakej71n5q8k/futujowowazema.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf30c7503e---suvob.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/eedcd765555a0d7b3373b0770c090393/tafapexanedufupawazilasu.pdfIn PDF document text
    • http://choinka4x4.org/cms/files/file/1651362290.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/garemhfh49qr4gfhihq7u1fib4/kilobagakofazewitobu.pdfIn PDF document text
    • http://alarmy-kamery24.pl/userfiles/file/5948134368.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d4b23655e---poluxa.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/77128581102.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/1c9329cc4c23c8ada01b366da13c6478/45968070582.pdfIn PDF document text
    • https://safrano.pl/userfiles/file/fokidoj.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/5d09ea4add892b899e1f577e9f3469ae/vavodexulejala.pdfIn PDF document text
    • http://cadelupo.it/userfiles/files/12743059010.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/eaac804fcf5577133e5fef22304e13ff/fanaman.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/c4782e86ce58d4f7b11aec73e3e9f3ae/maxekasunugofidajim.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000f423.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF423 4048 bytes
SHA-256: c94d5bee9c602797364b9f2ab2f2e58344f43e0da3d49143a94948217ffd8ff3
font_00_sfnt_off0000e119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE119 5616 bytes
SHA-256: 6432ce23cca08e6e32e2c2375130d36009912111da96b9a93a427426601133d6
font_02_sfnt_off00010324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10324 3744 bytes
SHA-256: c1a5a14ee7f842e571859034e4a9754b2e77b8616db56733ca1e762a73a7c172
font_03_sfnt_off000110af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110AF 11788 bytes
SHA-256: 8ff8a527ce5f1ed8942f17513aca834873e3eed45efe408489b17c0077449ad5

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