Malicious PDF — malware analysis report

Static analysis result for SHA-256 9faeba04ed8c8ed7…

MALICIOUS

PDF

78.2 KB Created: 2021-03-29 22:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 24a30dafeae38c3f1b8eae2ca8dd6446 SHA-1: 20cdb5d753a4a9dd33ef06a55632def5273f4c58 SHA-256: 9faeba04ed8c8ed7c3d481330231f95108b32b49719173ddcb45f0babad57aa8
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users. The presence of external URIs and the ML classification strongly suggest this PDF is part of a phishing or scam campaign, likely attempting to deliver a malicious payload or redirect to a credential harvesting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://druttle.ru/award?keyword=minecraft+pc+controls+pdf PDF link annotation
    • http://tugrull.com/daveliwoxewodiduxuwomurioxmj.pdfIn PDF document text
    • http://terugate.mypressonline.com/37121079628.pdfIn PDF document text
    • http://c-advance.space/xbox_one_teardown_guideadmj9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404983/normal_60065f9f1ee9e.pdfIn PDF document text
    • http://universe1.space/memoir_44_campaign_book_vol_2qxmhv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382772/normal_60090ff88e2af.pdfIn PDF document text
    • http://0fruit.space/fujuzepevajukunitexemotulkt3.pdfIn PDF document text
    • http://the-job.ru/transferwise_account_numbera4r0j.pdfIn PDF document text
    • http://lasleymarkt.ru/jar_of_hearts_piano_sheetpvezd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417023/normal_5fcb3a806772b.pdfIn PDF document text
    • http://henrysavbr.site/zizuwinofojudafesononzqnc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467576/normal_5fe15808456c2.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://s3.amazonaws.com/jozaponi/the_catholic_answer_bible_nab.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/vimobenopafi.pdfIn PDF document text
    • http://fijedenojex.rf.gd/combustion_and_fossil_fuels_class_8_worksheets.pdfIn PDF document text
    • http://lolufijufafoz.rf.gd/36319895900.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/how_to_lose_weight_while_breastfeeding_diet.pdfIn PDF document text
    • http://lirebeto.rf.gd/degitubunemakudebufuvipow.pdfIn PDF document text
    • http://wexugemo.epizy.com/adreno_profiler_tools.pdfIn PDF document text
    • http://lozabozirazal.rf.gd/telugu_calendar_september_2020.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_off0000e759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE759 4944 bytes
SHA-256: c2c0e684d2712b70d3c723941275a172eaa059b0a8ecc632579ace3f6b8812ac
font_01_sfnt_off0000f828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF828 10932 bytes
SHA-256: 12b533a89dabbe898bf49bb8d6c9f91cf8bc1f41e564ebea62f82c2be445e32c
font_02_sfnt_off00011d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D61 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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