Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b2295179650c49…

MALICIOUS

PDF

62.3 KB Created: 2020-08-04 08:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a001b3d25f3ac78de9da1cd5f3202f8e SHA-1: 71f445002ca48baaa48b53ca41ba88c91b59581b SHA-256: 52b2295179650c498188217c982113517494dca78486c7455d8a4aa1bdac0aac
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also assigned a high probability of maliciousness. The document body contains numerous embedded URLs, including a primary malicious redirector at 'https://ttraff.ru/pify?keyword=sources+of+carotenoids+pdf'. This suggests the document's purpose is to lure users into clicking these links, likely leading to further malicious content or phishing attempts.

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=sources+of+carotenoids+pdf In PDF document text
    • http://toraneno.wandlevalleyforum.org/uploads/1/3/1/6/131636948/risudofidakemu_nururelugar_gugoxufozub_fikimefapem.pdfIn PDF document text
    • http://files.islandhillfarm.ca/uploads/1/3/0/8/130813643/9566384b.pdfIn PDF document text
    • http://files.sndcdallas.org/uploads/1/3/1/3/131398134/bonawusanewitubud.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/1/0438/3647/3501/files/dometic_brisk_air_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/98091236380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4210/files/6602546915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/lelajojugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/runojasaniwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/41661458427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/62246931798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2783/files/bpsc_pt_exam_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5595/9464/files/bharat_ki_nadiya_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5562/files/vademulunawiledapekek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mobisibat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/24788219367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/class_11_cbse_biology_textbook.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 8

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_off0000a80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA80A 5220 bytes
SHA-256: 0f19c23cd5b39b087640d9f5bd956c3566601d2d7d3d72f14a128a0981ba1df7
font_01_sfnt_off0000b9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DC 15940 bytes
SHA-256: b9827bdfa56b83f876bc173eb6e9d6cd7cf0633cec3b6a5555f904c6a2e95c93

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