Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2da66df71a85197…

MALICIOUS

PDF

37.1 KB Created: 2020-08-22 02:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4c5d8f19ff4e80d221e449282cc44e8 SHA-1: b7604f0bb96f1b6ab6e6f5a6e702e09c750a1d11 SHA-256: a2da66df71a851970992f3d5ab6a9261fb22eac4e840414fcc5f56faee5614ed
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to `https://ttraff.ru/pify?keyword=aliens+full+movie++mp4`. This indicates a link farm or redirection tactic designed to obscure the final malicious destination. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted from this sample.

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=aliens+full+movie++mp4 In PDF document text
    • http://files.icewaterrecovery.com/uploads/1/3/2/6/132681670/4845144.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/1/0428/9835/8432/files/81159011373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8927/2725/files/infarctus_du_myocarde_ecg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/koromewogifusujogiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/oracle_alter_user_unlock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73807437975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/mimitizunijizevadifem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9735/6443/files/nancy_drew_sea_of_darkness_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/63580567549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6462/2242/files/97667267862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/wavudetosemufapumabutesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16779745642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8562/files/saxuture.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 3

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_off00005188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5188 4876 bytes
SHA-256: c703f3f631f98fd49267e619fd136a62b10b55f3e9873af892a31453f82e4942
font_01_sfnt_off00006223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6223 11292 bytes
SHA-256: 6525edd0721ae8546360d88b268532f928c5b147f2882c403815e6bd290137a4

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