Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea8f62f8c5f3e16…

MALICIOUS

PDF

44.1 KB Created: 2020-08-20 09:11:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19e54cf53e038d0fdfca19ab9ceca9c0 SHA-1: 016868e7dd596fa447c4ffe2f9199e415e147f3e SHA-256: 9ea8f62f8c5f3e16eb8528807822048f2ed2a84b8143dd7ca41679054e0be895
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'VLC video player app for android'. This URL, https://ttraff.ru/pify?keyword=vlc+video+player+app++for+android, redirects to a link farm hosted on Shopify, which in turn hosts numerous PDFs. The primary malicious URL is the initial redirector.

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=vlc+video+player+app++for+android In PDF document text
    • http://relone.taghmonns.com/uploads/1/3/1/6/131636725/kuwanule.pdfIn PDF document text
    • http://files.most-wanted-ent.com/uploads/1/3/1/1/131163943/tuwajorusuxose-zosewe-sameda-xotamazakubo.pdfIn PDF document text
    • http://files.marlowkelly.com/uploads/1/3/1/4/131407901/dodalijeronajozokulo.pdfIn PDF document text
    • http://depixunul.gunfightersmc.com/uploads/1/3/1/0/131070627/5238742f9.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/1/0435/3448/3605/files/39335367675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/pulodujidefogigibazar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/zedawifuxisexexirim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/raving_fans_ken_blanchard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5916/5849/files/81989588979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5720/8731/files/gram_positive_cocci_bacteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/css_background_color_opacity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/zuzizawusosesezelomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6993/9607/files/kumulepodevoragaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6143/files/fubarewad.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_off00006e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9F 5096 bytes
SHA-256: 7c71bb3299af1413166bae7f7630f2e195eb6816601cba8bc46af9b45294a114
font_01_sfnt_off0000800e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x800E 10516 bytes
SHA-256: 05dd91d9d56dfc785eac4a552763a4e529a5824efef4ada7cc23d75d06ba4edb

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