Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a607232f3c5ca2…

MALICIOUS

PDF

50.7 KB Created: 2020-08-04 09:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d23e8833391a8f9e2bb8b2e426360f32 SHA-1: fd5d2ae355a03c71659fdd197acf1cfb4d0a26d2 SHA-256: 35a607232f3c5ca25e298ef214079d4dd01a5ce658c5de69732b3ed67fffea6b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and redirects to a malicious URL, indicating a phishing or scam attempt. The embedded link 'https://ttraff.ru/pify?keyword=constructing+perpendicular+lines+worksheet+pdf' is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent.

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=constructing+perpendicular+lines+worksheet+pdf In PDF document text
    • http://wozosesu.activeinitiatives.com/uploads/1/3/0/9/130968917/pabekapadibuge-noxajaxumet-xigifeji.pdfIn PDF document text
    • http://files.dpjutzi.com/uploads/1/3/0/8/130813639/kusisuw-dalazusegag.pdfIn PDF document text
    • http://files.hoicongregation.com/uploads/1/3/0/7/130739443/vuxoxefi.pdfIn PDF document text
    • http://files.kristentreglia.com/uploads/1/3/0/8/130873840/273eb639.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/1/0430/8667/6117/files/universal_soldier_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2411/1000/files/transportation_engineering_and_planning_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/files/fimedufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/20452119336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1878/7743/files/bijemobowawoweboxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/39238389937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/fetugoponuvibepufitafebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/89843821471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/xiduma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0412/4571/files/59670829965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/66236408476.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 4

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_off000077eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EB 5476 bytes
SHA-256: a7f1e4ed2e53afbc3df83d313b0fa1076120b510a2ada666bdbd4f58b80db5f9
font_01_sfnt_off00008a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A99 10788 bytes
SHA-256: 78cb2551808ac650e5d96b244d56e6f7d24b8656aca22a43186ad7bae4ba766e
font_02_sfnt_off0000af48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF48 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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