Malicious PDF — malware analysis report

Static analysis result for SHA-256 9da693972f6f8d5f…

MALICIOUS

PDF

71.1 KB Created: 2021-06-05 15:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d794cbc03876c79270f70a98cd402b7f SHA-1: de84091f2a41c6e3d6125bf21b6b139ae9fc622c SHA-256: 9da693972f6f8d5f469e8a7ded632b61d8cf9b11123486ab89e570fb6933b7cd
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://oniceh.ru/pbw?utm_term=elma+meadows+golf+season+pass PDF link annotation
    • https://desakawof.weebly.com/uploads/1/3/4/7/134705456/diwopezapexifalanip.pdfIn PDF document text
    • https://zeziruxowajud.weebly.com/uploads/1/3/4/6/134698921/fagolotokuxase-xarule.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417140/normal_600498073829c.pdfIn PDF document text
    • https://kupifima.weebly.com/uploads/1/3/0/7/130775493/rubuwesojomezef.pdfIn PDF document text
    • https://rixagaxovexi.weebly.com/uploads/1/3/4/0/134000332/7803382.pdfIn PDF document text
    • https://genexopeg.weebly.com/uploads/1/3/4/6/134661587/8df43816.pdfIn PDF document text
    • https://nokodemi.weebly.com/uploads/1/3/4/0/134042357/ce09f8.pdfIn PDF document text
    • https://xulowipel.weebly.com/uploads/1/3/4/5/134594063/37cda43d1ca6c6.pdfIn PDF document text
    • https://joxejiduzimomad.weebly.com/uploads/1/3/1/3/131383973/e2856682a.pdfIn PDF document text
    • https://ginataxidorivez.weebly.com/uploads/1/3/4/0/134041929/vavirudogomifakojez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478685/normal_5fcee07c006e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369917/normal_5fdeedcfd723a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425504/normal_60027371eb7bc.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/tabul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wijozuzapusa.pbworks.com/f/sodebotuvada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f747208-a04b-4bba-8035-097d11bc9956/vibobagorezuwop.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/w/file/fetch/144423462/buvirixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50955fda-0b8b-4271-bc90-9e2fbfe7180c/bopikirobabofimarog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b508d7-545c-4d9b-90e0-e37101fd1749/how_the_grinch_stole_christmas_2018_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a56ae232-d9bf-4c3e-a054-5bbc16e7a782/5e_monster_stat_cards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83059c49-2d31-4c51-9c64-364bd1f18110/dumelikuzofumajukobi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79F 5312 bytes
SHA-256: 779d6d908796ccb9b6e0af7c71efea7b4bb5a53e5a2aaa292ce144dbaba8cd12
font_01_sfnt_off0000e9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BB 10832 bytes
SHA-256: d71692b397700a9059ba540fb4746157cb29514405b9d44c0144a3c70a22064d

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