Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c9f5cc4e1e16b04…

MALICIOUS

PDF

47.6 KB Created: 2020-08-25 06:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07456fd0032d8a6495b9cd8035dc703c SHA-1: f2194ff34f79924b0589f0294b9c89bd60e8ae86 SHA-256: 9c9f5cc4e1e16b042dc384dba341cef45b0ade421e2e4d47c097b1b9addf52a6
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a reference to 'homelite chainsaw manual oiler', suggesting a lure. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links, likely for SEO poisoning or distributing further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=homelite+chainsaw+manual+oiler In PDF document text
    • http://files.terrafuller.com/uploads/1/3/0/7/130739916/pisunumuno.pdfIn PDF document text
    • http://wedisexi.thepeacesyndicate.org/uploads/1/3/1/0/131070355/5654a41.pdfIn PDF document text
    • http://tupira.angyhall.com/uploads/1/3/1/3/131380600/xivipupo.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/1/0434/6665/3858/files/perunasekepadewejuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/47130062885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7883/5606/files/bunkie_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7501/8662/files/megoposejofumuwetabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/alejandra_pizarnik_poems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9879/1333/files/bobogekitiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/53892609973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/apc_600va_ups_specifications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/2557998455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/beginner_vocabulary_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/xidumobudikipibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3115/8175/files/understanding_and_using_english_grammar_4th_edition_workbook_download.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 2

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_off000074ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74ED 5092 bytes
SHA-256: 1bdf29229e2dc15b1ff114a50a2de2e4ce7283d03bb6c49643f60b59c99d81d0
font_01_sfnt_off00008620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8620 13616 bytes
SHA-256: 2568a0dbee7b0168bfacd8d1c4c15e989f0a16fe8c697f68559237820cd6918a

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