Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b6d568d7ff8107…

MALICIOUS

PDF

79.9 KB Created: 2021-03-03 18:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f76b23e011b664cbe00705486fd117d5 SHA-1: e802abb0194923d2f6a807cb4d809b8a4520bdce SHA-256: 11b6d568d7ff8107e0d56e8efe15ce734edf783a52982d2079f98ed0c3618466
104 Risk Score

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 Pdf.Phishing.Trojan. It contains an embedded URL pointing to 'baarspo.ru', which is likely used to host or redirect to a malicious payload. The document body, though heavily obfuscated, suggests a lure related to a 'Diablo 3 strategy guide', combined with a 'download' call-to-action, indicating a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/strik?utm_term=diablo+3+reaper+of+souls+strategy+guide+pdf+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460055/normal_5ffcbb46e4243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475565/normal_602c78172e3e2.pdfIn PDF document text
    • https://cdn.sqhk.co/gexopoku/Ofjdhe5/muxexinetigota.pdfIn PDF document text
    • https://cdn.sqhk.co/sulugedako/fXWghhj/pockets_billiards_wings_beer_el_paso_tx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386365/normal_5fe26fdfd520b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_601ce40235777.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/hfhbgjc/wilepu.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/gggggia/exos_heroes_indonesia_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/rotonoba/5ibDiaJ/nesosubogogetotodufosod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403676/normal_60366f3fd59c0.pdfIn PDF document text
    • https://cdn.sqhk.co/mavixuwaloz/ihjg7xE/escape_masters_manukau_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rerinago/21883585873.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/32735369294.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/ropebe.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/bajela.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_off0000fa52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA52 5612 bytes
SHA-256: 62772269a4663fc1a76a35b68e08b70bcadd47784cbb2e3d34a368654baa2edf
font_01_sfnt_off00010d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D82 10904 bytes
SHA-256: bfbacc0de4c6f3af1c1869b249812a392df7c20086d84f07660fe7595f776093

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