Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac26b7b9b1110b38…

MALICIOUS

PDF

72.4 KB Created: 2021-02-15 01:45:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0be800948520fe819ab78e97eee42f4d SHA-1: c33749f4ea1bc9d85cf09ba9e14033bd3e91411f SHA-256: ac26b7b9b1110b38c85dcf48843fd14d6be1b725d98c2bb1a63d2b25f3069763
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI and a redirector link pointing to 'https://jottigo.ru/aws?utm_term=vmware++for+windows+8', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to software downloads.

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
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://jottigo.ru/aws?utm_term=vmware++for+windows+8 PDF link annotation
    • https://cdn.sqhk.co/manigonodapu/2geRm5k/marketing_strategy_skills_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/fljaWie/bomuvudugewivulebana.pdfIn PDF document text
    • https://cdn.sqhk.co/dirotiweze/igc7id9/galaxy_s10_ringtones_xda.pdfIn PDF document text
    • https://cdn.sqhk.co/dixobiwi/uPjhVia/rock_hero_2.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/ifu9je0/43917659606.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472484/normal_5fe24ea8916b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386607/normal_60086515d464a.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/Kicifgh/72709833321.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gusagokasu.epizy.com/98533675506.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/10297618853.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/actor_atharva_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/badusere.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/mi_amazfit_bip_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/vidmate_2018_free_0.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/migesokibuwosibomomelozu.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_off0000de00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE00 5272 bytes
SHA-256: 8664f006a46d5c78a6deaab861e137c8ec79d514cf02ef762d56ac06c4974af5
font_01_sfnt_off0000efec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEC 10836 bytes
SHA-256: aa2840a83ffcb76cf26b8babf818f6ef04294cec5920691336cf32984f1a2813

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