Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bb1bbd71f6af7ae…

MALICIOUS

PDF

34.3 KB Created: 2020-08-18 15:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c1521cd08ad003994d4502fb649e4b7 SHA-1: 15c30d1609e00deb006888b09dca52fc6cd691d3 SHA-256: 0bb1bbd71f6af7ae4fb304d33ce7e260f5cff4c92219d5513da7992420e17e45
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to create an SEO link farm, directing users to a malicious redirector. The primary lure appears to be a free guitar sheet music download, which ultimately leads to the malicious URL https://ttraff.com/pify?keyword=river+flows+in+you+guitar+sheet+free. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links supports a phishing or scamming attack pattern.

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.com/pify?keyword=river+flows+in+you+guitar+sheet+free In PDF document text
    • http://files.indianaregion.org/uploads/1/3/0/7/130775897/8900363.pdfIn PDF document text
    • http://files.hiredentalstaff.com/uploads/1/3/1/4/131437806/816324.pdfIn PDF document text
    • http://files.afalive.com/uploads/1/3/2/6/132681812/6086133.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/1/0427/8000/0423/files/rixedigufewapapowiximibez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/51158479180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5973/9814/files/junior_achievement_economics_study_guide_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/quality_assurance_documentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/19655690999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/atmosfera_estandar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4514/3206/files/hari_arora_applied_mathematics_3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3278/0695/files/innovativeness_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/puzanikimibixivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/kirabowaramokaduweraxefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9327/0429/files/73306835411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/xujos.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 7

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_off000046ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46CA 5292 bytes
SHA-256: c00e4c704108e01e815844584334ab91461b0f6acb341327382e4df1754e80ba
font_01_sfnt_off000058e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E0 10384 bytes
SHA-256: b41e50a9d9d84776091664881ffee383525a7ec65f26e61316ee049df9185b98

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