Malicious PDF — malware analysis report

Static analysis result for SHA-256 22227c4822b98bfe…

MALICIOUS

PDF

88.6 KB Created: 2021-02-25 07:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 972929caf49c4171fe765801a97df610 SHA-1: 7d08fede0f327a10ac98a795953baf4898f38659 SHA-256: 22227c4822b98bfe46d04ff87a42196d136042c56403076b05ffdcc790dd1db0
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, many pointing to disposable domains and Weebly-hosted files, indicating a link farm or SEO spamming operation. ClamAV detected this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The embedded content, though heavily obfuscated, suggests a lure related to 'best catholic bible', which is likely a deceptive pretext for the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8968

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/award?keyword=cual+es+la+mejor+biblia+catolica PDF link annotation
    • https://bekodezu.weebly.com/uploads/1/3/1/8/131856725/lajudomojikinalu.pdfIn PDF document text
    • http://datinge.site/fate_core_system_character_sheetx8957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_6028bba10e41f.pdfIn PDF document text
    • http://forkidsshop.online/ferrari_458_price_trendsei7g3.pdfIn PDF document text
    • http://harkateine.fun/24949500272604cv.pdfIn PDF document text
    • http://ig-objectionform.com/how_to_make_beautiful_tables_in_powerpointbkpko.pdfIn PDF document text
    • https://rovibabewovel.weebly.com/uploads/1/3/4/8/134884015/6934547.pdfIn PDF document text
    • http://bbflowers.net/volume_cube_counting_worksheetslboxh.pdfIn PDF document text
    • https://zowukudikumo.weebly.com/uploads/1/3/1/3/131382828/kuxidewovuta.pdfIn PDF document text
    • https://fasanubuxa.weebly.com/uploads/1/3/4/7/134733786/141ff59.pdfIn PDF document text
    • https://vituxusupodewe.weebly.com/uploads/1/3/1/3/131379836/gigomowujesinage.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/explode_the_code_books_grade_levelh3b7x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425514/normal_60051936b6172.pdfIn PDF document text
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/rifotunozixowib.pdfIn PDF document text
    • https://zivexuxa.weebly.com/uploads/1/3/1/8/131871677/59d629556b022.pdfIn PDF document text
    • http://sberbank.services/safety_siren_pro_series3_radon_gas_detector_-_hs71512_by_family_safety_productsybtn7.pdfIn PDF document text
    • https://kajilavenusifo.weebly.com/uploads/1/3/2/6/132683330/jetibikafewu.pdfIn PDF document text
    • https://jopixumux.weebly.com/uploads/1/3/4/7/134734794/zotoxifefive-dowedanowuben.pdfIn PDF document text
    • https://laxuwipulave.weebly.com/uploads/1/3/5/9/135956831/jejodasopewusoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387718/normal_601a3623c6f93.pdfIn PDF document text
    • https://xejigidusulup.weebly.com/uploads/1/3/4/7/134730122/1f7ee5b98c4.pdfIn PDF document text
    • https://vudovonijojor.weebly.com/uploads/1/3/1/4/131437364/tisodakukefasitatij.pdfIn PDF document text
    • https://vudulami.weebly.com/uploads/1/3/5/9/135964857/1e96533f130a85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_601f7e841945b.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED8 5064 bytes
SHA-256: a2f40fa2e4a7a41eddebb851e0a4869d4d16e4c98e0a16f08c22b5ec4d335bd4

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