Malicious PDF — malware analysis report

Static analysis result for SHA-256 331561f7807bc0b9…

MALICIOUS

PDF

38.0 KB Created: 2020-08-26 16:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a359e17bae9992f1f5dc45a678e1742 SHA-1: 3550ccb67222232ec01b1b63c0d99eaa26d8aa17 SHA-256: 331561f7807bc0b9afc0fc82b287adbf5793e899ef2f0e97b880322889432989
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely part of a phishing campaign. The document body, though heavily obfuscated, contains the string 'Anytrans for pc' and the URL, suggesting a lure for software. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting a malicious intent to drive traffic to external sites. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.cc/pify?keyword=anytrans+for+pc In PDF document text
    • http://files.shamrockstudiosentertainment.com/uploads/1/3/1/4/131453253/dofolod_vujone_feboxeka_jisesaparima.pdfIn PDF document text
    • http://files.nullacruising.com/uploads/1/3/1/1/131164129/7823622.pdfIn PDF document text
    • http://files.graciebarramarlborough.com/uploads/1/3/2/7/132741382/xemezakesimuxiduxem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6987/3054/files/nopezafuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/pdf_to_audio_converter_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/angularjs_autocomplete_directive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5508/files/vutaropokaxewosebefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4567/3377/files/bach_brandenburg_concerto_5_violin_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/fugularajujuziwire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6388/5472/files/ernst_cassirer_an_essay_on_man.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8381/5325/files/giwunel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6119/8491/files/mejuguxavabuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/42353187307.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

Related samples 2

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_off00005782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5782 5068 bytes
SHA-256: 7e8896804d4f70b08370688f1044e0838f84ebc8598ab41d01ebc158a3c4f7f8
font_01_sfnt_off000068d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D2 10240 bytes
SHA-256: 5f22ce2b18984086c6bfce96833dde0fdfd6c08da70bd1652e3fc63fa130033c

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