Malicious PDF — malware analysis report

Static analysis result for SHA-256 45637cca34df4110…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 00:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4230e778bae29d150c313ba2be827bb7 SHA-1: 5eeeb69dc91a80ab553bb0cdadd0d3977a461748 SHA-256: 45637cca34df41105e73499fa8001c2d3e1f7bade426931eb572af1586e3968b
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though corrupted, contains text related to 'animation software adobe flash free' and includes the malicious redirector URL. The presence of a visual download button lure further supports the malicious intent. The primary malicious URL is ttraff.ru, which is used to redirect users to other potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=animation+software+adobe+flash+free In PDF document text
    • http://files.bradleyelementary.com/uploads/1/3/1/0/131070867/mopededowoviwumama.pdfIn PDF document text
    • http://files.midwestnettingsolutions.com/uploads/1/3/1/0/131070398/jovibososazekajagata.pdfIn PDF document text
    • http://files.chaoclimbing.com/uploads/1/3/1/0/131070566/vopinovuj-ruwiputa-turokuve.pdfIn PDF document text
    • http://files.sergedesroches.com/uploads/1/3/1/3/131380094/gazetanalonega.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/1/0433/9875/8557/files/briggs_and_stratton_repair_manual_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/lowes_orange_city.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5383/2609/files/shannon_s_diversity_index.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2199/1079/files/53445252412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/tezotexusunawosonogore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/81894299546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9392/2726/files/edit_document_text_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2709/5967/files/linuvosixifaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/gejulikojiwugekiputafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/ruzuxamepupazumifowumuvan.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_off000060f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F8 5368 bytes
SHA-256: 7724cb6649b48c518ea81701046fac550ead9da5a46a1b1595cd01582be2c8bc
font_01_sfnt_off0000730e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730E 10120 bytes
SHA-256: 8b2fe60387952b07b6b140212751fef08a703caf56959f2f0e51424043a230ee

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