Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ffa16926536f8c7…

MALICIOUS

PDF

47.7 KB Created: 2020-08-12 07:42:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00342249bd1253b301653abbf3156da0 SHA-1: 4ea2191cf4a5380fd0c6673f88e1ecb8303b1246 SHA-256: 7ffa16926536f8c70162b4b0554d427158595d7e2077b1ea20b85981f3c440f9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, specifically 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to trick users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=baghban+book+pdf+in+urdu In PDF document text
    • http://files.dblabservices.com/uploads/1/3/1/4/131407424/sibug_bevabudiroz.pdfIn PDF document text
    • http://files.mccubbinresilience.org/uploads/1/3/0/8/130814680/wikixetevedukulo.pdfIn PDF document text
    • http://files.childrenfirstcurriculumusa.com/uploads/1/3/2/6/132695194/7096466.pdfIn PDF document text
    • http://files.heartsfrommali.org/uploads/1/3/1/4/131406827/7711014.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/joxolakufupimeriju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/nipesuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1025/1176/files/22048626437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6578/3958/files/south_lomei_labyrinth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3423/7345/files/jerozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6881/6544/files/django_array_field.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/wafakuzinugirem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3874/4469/files/1113095038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/xuvewepojogosidal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/57167203252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8078/5821/files/bolivia_water_war_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2578/5255/files/40873885947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/9448390260.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7076 5032 bytes
SHA-256: 501da2a540ee0f5387496a3d987bcb1cce9241d08f5cfe1178d77c084a8b385b
font_01_sfnt_off0000816f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816F 10144 bytes
SHA-256: 474a055b0281ea77c6de14195279b1a24302cb59853e87c977dfe2676de96b8d
font_02_sfnt_off0000a415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA415 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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