Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07a0dc4efe11f1c…

MALICIOUS

PDF

47.2 KB Created: 2020-08-04 01:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c8505836b0ec63f89f8088227b86434 SHA-1: d6d61d7a1654abf945833b3a8640425270106ef8 SHA-256: d07a0dc4efe11f1c86113e9c481a836f1bdb5a54fad4d2069d3cfd06c935a2a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a 'syllabus' lure, which is a common tactic for phishing or malware distribution. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bcom+sol+syllabus+pdf, which is likely used to redirect the user to a further malicious destination.

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=bcom+sol+syllabus+pdf In PDF document text
    • http://files.iifbc.com/uploads/1/3/1/3/131379894/wezobasometado.pdfIn PDF document text
    • http://files.neomoonart.com/uploads/1/3/2/6/132696512/sejibimamilitomanib.pdfIn PDF document text
    • http://files.heathernorrisart.com/uploads/1/3/2/6/132682303/6425092.pdfIn PDF document text
    • http://files.quixotecommunities.org/uploads/1/3/0/8/130874233/dosexisalimag-zuvowizadesupa.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/1/0433/4085/7494/files/69497055855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/bogoroditse_devo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3214/0186/files/sijinikosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2576/6312/files/4728770817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/vubokelun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/fitbit_charge_2_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8998/4674/files/mujekogedidobelif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3431/1832/files/jaluxifixororonanikige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30740110423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4453/4429/files/ansiedad_en_los_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/4440821509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/recharge_card_printing_business_plan.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_off00007ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD3 5496 bytes
SHA-256: 4fd4d95dbaa63e1d8978b805d04ca688f6ca4604f22631a31c6eab72c4dc28ea
font_01_sfnt_off00008d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7C 10088 bytes
SHA-256: ad275823b5c28795b94ba35ee561b5d0b6bdfd2d926f65fac444dc2b0f0638c8

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