Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1e10e55c9ea122…

MALICIOUS

PDF

83.1 KB Created: 2021-01-17 04:30:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1b8a88cab54e05e99776e724e26b584c SHA-1: d56cf30ddcf5ef529afe0412db5b60c2be70f9e8 SHA-256: 2a1e10e55c9ea1224c3729977163b28fe67a9c08e726a2a40acae6d80c57dad2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the presence of external URLs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=k20+vs+k24+miata PDF link annotation
    • https://cdn.sqhk.co/revogonesox/nophdDP/word_search_free_crossword_and_puzzle_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388406/normal_5ff5c33b304fa.pdfIn PDF document text
    • https://site-1195473.mozfiles.com/files/1195473/guess_hero_mobile_legend_2020_coming_soon.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/n1Iheig/zivorobisunegokaragexopa.pdfIn PDF document text
    • https://site-1168242.mozfiles.com/files/1168242/let_s_go_planetshakers_lyrics_and_chords.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451365/normal_5f9f56074d162.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370088/normal_5fdd685660bc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_5fb3490353820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495997/normal_5fad7344529e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428033/normal_60027157ef9a0.pdfIn PDF document text
    • https://site-1178527.mozfiles.com/files/1178527/walmart_davi_nails_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5fafff7119175.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464077/normal_5fde31b44f1d1.pdfIn PDF document text
    • https://cdn.sqhk.co/supetuzitepi/Gjicsfe/62052833549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_5fa4fed78f9b6.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/XthhuyZ/solarx_auto_insurance_agency.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CF 5160 bytes
SHA-256: c3ab016bd8703eebb74768f13be915ede8988aedfe21920e90a46ea20eb9fa43
font_01_sfnt_off00011961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11961 11220 bytes
SHA-256: cb890f1d50e723144acc2111cf51c87951451b33c841acde6ad0c46181b9c716

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