Malicious PDF — malware analysis report

Static analysis result for SHA-256 05575d2bada49794…

MALICIOUS

PDF

70.8 KB Created: 2021-01-06 12:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f3ccbe69be2f0335c3ced41fd648c8b8 SHA-1: 2bbc2845391348015bb829a322601c2ae8af1098 SHA-256: 05575d2bada497945fd391ea17864b1ca0ce10ed218919cc1312561b05639670
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable domains, indicating a link farm or SEO manipulation tactic. The presence of embedded URLs suggests an attempt to redirect users to potentially harmful content or phishing sites.

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://trafffe.ru/aws?utm_term=balance+druid+3.+3+5+pve+guide PDF link annotation
    • https://sinekagu.weebly.com/uploads/1/3/4/8/134855021/berojonumenazelite.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/fejavar-budibubikivopax-wufatefavirur.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/masobuden-wexov-tovafifinif.pdfIn PDF document text
    • https://nelizozab.weebly.com/uploads/1/3/0/8/130874358/e19c63daa2b3ec7.pdfIn PDF document text
    • https://kojuvaneginumo.weebly.com/uploads/1/3/4/8/134890768/6216461.pdfIn PDF document text
    • https://fofifakexetag.weebly.com/uploads/1/3/4/3/134345684/vonorumebadato.pdfIn PDF document text
    • https://tidukefawa.weebly.com/uploads/1/3/4/8/134851120/xiditopi_walabiwo_dosarofuboz_rogeja.pdfIn PDF document text
    • https://tasufevijusenix.weebly.com/uploads/1/3/0/8/130814010/jidoti.pdfIn PDF document text
    • https://waleberof.weebly.com/uploads/1/3/4/3/134385841/3de78573bff0f.pdfIn PDF document text
    • https://tugojomabam.weebly.com/uploads/1/3/4/5/134588125/sagexabelawiromanowe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4c708a4e-6f95-4348-8fb1-7cb98d1e71f3/29900455580.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/best_vanilla_sheet_cake_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d37d1c3a-51bb-45a0-9def-76886f3b3412/95348161372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd7f3e74-3179-4ab5-8df5-ece0ab1f3bd8/shadowhunters_season_3_episode_4.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_off0000ccf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF1 5184 bytes
SHA-256: 1c7e1ad7c99ae65de5edf14d1046f087db264c3e8bc7d9b8b3da2d14e7f80cb8
font_01_sfnt_off0000de9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9C 9776 bytes
SHA-256: 173ab3fc4d1d46806f3843eb614234455a70a7b6731b872163fa5045dd7b50a5
font_02_sfnt_off0001001c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1001C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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