Malicious PDF — malware analysis report

Static analysis result for SHA-256 2258d98d08ac82fd…

MALICIOUS

PDF

70.7 KB Created: 2021-03-14 11:14:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e06a1482fa95ee3ac223d0b8759045ec SHA-1: 0184b09138165c4c03bcf075ce879906b1151347 SHA-256: 2258d98d08ac82fd45371615a8e6805fe3727150981c0baa7cd685741c7d07da
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9081

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 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://xajibur.ru/award?keyword=albertville+outlet+map+pdf PDF link annotation
    • https://cdn.sqhk.co/kopenanum/dLMgjha/gladiator_glory_apk_hile_indir.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/sjbyAsJ/38667183204.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/4snijPz/nexapag.pdfIn PDF document text
    • http://velesvoyage.ru/710350392832ntsd.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovafom/bhhgheq/94064190218.pdfIn PDF document text
    • http://outputqwvk.space/basic_electronics_tutorial99mfj.pdfIn PDF document text
    • http://craftsmansmetics.com/zisexilenotizudi8kvno.pdfIn PDF document text
    • http://wdd13.ru/cant_argue_with_that_crossword2bs80.pdfIn PDF document text
    • http://naturalik.fun/are_functional_groups_polar08hog.pdfIn PDF document text
    • https://cdn.sqhk.co/kupujape/Wqicigz/beverifaxim.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/gd8gfZJ/baldi_s_basics_camping_classic_pc.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/8f04afc3-696c-4359-83dc-4c54beefea48/49509544731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2809bf2d-8e6d-4f61-9014-f5695cf627fc/how_to_stretch_sore_neck.pdfIn PDF document text
    • http://sumidemeg.epizy.com/french_in_action_textbook.pdfIn PDF document text
    • http://dejenirapavo.rf.gd/hello_adele_lyrics_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/kagarapofirozazewududoji.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/how_to_make_a_letter_of_intent_for_business_franchise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c236fa6-a9ca-4023-b6a0-10d7b94b52cb/kugadaviwese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc82aa78-cb68-4334-8ae9-212478471b8b/natez.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/dokusirazajaf.pdfIn 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_off0000d3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AB 4972 bytes
SHA-256: 6bff73d89b21d33ff58f1f0fd9dc8096eb273b91c6c19a966b9390f7f73e9f55
font_01_sfnt_off0000e498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE498 11612 bytes
SHA-256: 41337750de437702af597923042b81edb84129603cc1c381d0b46389211833a4
font_02_sfnt_off00010b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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