Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0d82d89ae712f8…

MALICIOUS

PDF

93.1 KB Created: 2021-03-12 02:30:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 908587c19d142816cdb9153af84b7d25 SHA-1: 88d162f93d183142fbff57fa1ba9337f0fd0e4d1 SHA-256: fb0d82d89ae712f8897fc8dca4f4648f00210f7952a764cdcc3138b4fda4f2e3
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a technique often used for SEO manipulation or to host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's part of a link farm designed to redirect users, potentially to phishing sites or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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
  • 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://maypoin.ru/wix?keyword=ruki+the+gazette+married PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460043/normal_60371e7d78191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417308/normal_60187f8b9fee6.pdfIn PDF document text
    • https://cdn.sqhk.co/pubabolab/glgfblU/64643448617.pdfIn PDF document text
    • https://masagefila.weebly.com/uploads/1/3/4/5/134505888/gupebix.pdfIn PDF document text
    • https://genebametujo.weebly.com/uploads/1/3/4/9/134904617/7082679.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/jc2CAhe/shark_attack_game_free_download_softonic.pdfIn PDF document text
    • http://zafuwozemupojaw.22web.org/26965814998.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/63c36bcc-f38e-4648-ae4f-1bd320e1a3e6/what_is_avon_skin_so_soft_good_for.pdfIn PDF document text
    • http://zalaxorenisev.epizy.com/52281860743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8408114f-3729-4640-be9f-ddf3d89b49c5/how_to_set_eheim_automatic_fish_feeder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd4cddc-886c-4db6-8657-ffd45f090cbc/live_stock_market_download.pdfIn PDF document text
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_e6a3fa0435eb43de858a911489f31dd5.pdf?index=trueIn PDF document text
    • https://d99c26cc-8c68-456d-a039-1a26994c8d26.filesusr.com/ugd/105a8c_d924617e722a458d945e325193b175bf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d51f09a-c9e1-46ac-9939-12b2efe7b064/the_boy_in_striped_pajamas_movie_quotes.pdfIn PDF document text
    • https://f730d15c-1921-46d2-b6d4-288333e40990.filesusr.com/ugd/e2c223_ed2189f12814486586f1176849417635.pdf?index=trueIn PDF document text
    • http://buwivarozip.epizy.com/6598912937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96a2699f-e6b2-4cd7-9101-8b3da43aa299/how_to_make_origami_crane_steps.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11255 8916 bytes
SHA-256: ff4c222b38d81c693f72534d700de3b651fdbf67f3ae307b08c8233a2bc9648a
font_01_sfnt_off00013012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13012 5152 bytes
SHA-256: 05b0795f85964340a5dce1b2ad629eeaaa12a75c90d2c49e2d40ad5b2e58b26e
font_02_sfnt_off0001417a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1417A 10500 bytes
SHA-256: 1d54702961f16bd692fbd384591864eb3f4954762f4426ba931b6dab87b3b043

Open this report in the interactive analyzer, or submit your own file for analysis.