Malicious PDF — malware analysis report

Static analysis result for SHA-256 4459e7b21937d43a…

MALICIOUS

PDF

41.9 KB Created: 2020-10-17 03:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 652afdd6eec432a8fa4de4269285e8de SHA-1: 498fee75fdd7d890ae87f0480c9804e8eb194a4b SHA-256: 4459e7b21937d43acdd88455857286c9ccceeab73eb43cd725a3d2daf7b550f1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to redirector infrastructure, suggesting a link farm or phishing campaign. The primary redirector URL is `https://ttraff.link/123?keyword=venom+wallpaper+for+android+phone`, which is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other PDF links, indicating an attempt to lure users to malicious sites under the guise of downloading content. The ML classifier strongly supports the malicious verdict.

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.link/123?keyword=venom+wallpaper+for+android+phone In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f8938f45a548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f86ff929910a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8a30b576260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5f88467585326.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/rabaxabatire.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/6835850.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/vokelunewej_wedezeregen_lejofe.pdfIn PDF document text
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/47403.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/a1fa73cb.pdfIn PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/vategojako.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/ropesigele-burevake-likid-renolidisawem.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/1/0485/3222/6203/files/94122721859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9125/0337/files/destiny_2_edz_cavern_of_souls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/raketagasaxebawodekanodof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/5828/6758/files/60763980682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9639/0814/files/47830974626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8937/4621/files/54349307939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/puzaxodumosazapamonubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9114/4088/files/80017648410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2448/2982/files/art_of_animation_cars_suite_prices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9271/5941/files/38564208092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0098/9349/files/76611574697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7192/9020/files/titanium_tv_apk_download_old_version.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C8 5160 bytes
SHA-256: 795af92c1437ddf224976ccbe6cf06fb9a8be1e659e419a232db475206f93df3
font_01_sfnt_off00007838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 10016 bytes
SHA-256: 72e66d354f43a21ead7294be9ea4d9f9a2c056896f3f6490d4eaed8e4982e3c9