Malicious PDF — malware analysis report

Static analysis result for SHA-256 35293f877cf8b446…

MALICIOUS

PDF

52.2 KB Created: 2020-08-25 12:45:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8848692a9d0fd6a89001312351706d1e SHA-1: ea8c3751a9ec2a89c01809c836d6ecfd85bd0f84 SHA-256: 35293f877cf8b4461dcd070e25b1b1d9105a6d86692e85db9652ae35dc93e10a
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, a technique often used for SEO link farming or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body itself is heavily obfuscated and contains a mix of text and URLs, further supporting the malicious redirection 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.cc/pify?keyword=black+background+wallpaper In PDF document text
    • http://files.prettycardsandmore.com/uploads/1/3/2/6/132680986/bezizuvufowukur.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/1/0434/9820/9446/files/flyer_template_ms_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/32917713316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6724/8535/files/cave_story_2_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64830269039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/vojovejowokutasevem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/xesixanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/vakosatuzasuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/pusekidapemubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0313/1542/files/solazilak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7669/7760/files/punch_sound_effect_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/joravefuligesabefirav.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000789c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789C 5160 bytes
SHA-256: 62752da4f45e7bdeda50ec5652c9302f3be4e58781175a08538c63025e1dda46
font_01_sfnt_off00008a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A35 13828 bytes
SHA-256: 21ea465ea62b359f221b42adf92ca043154c022c54f816aa0ad6ab01ed2571c2
font_02_sfnt_off0000b620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB620 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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