Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8f1052006915dcb…

MALICIOUS

PDF

48.2 KB Created: 2020-08-04 07:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e43d049806f6f3fbfea1bd5db92682e9 SHA-1: d2218aa6123fc6b55248db60cb51fb05fbc1b5ad SHA-256: a8f1052006915dcb204e92693e12020c9f23f8a5fc9095cafe6287ee9e924f2a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is a PDF related to vocal training, which is likely a lure. The presence of multiple Shopify URLs, some benign and some unknown, suggests a link farm or distribution network. The ML classifier 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.com/pify?keyword=vocal+training+for+dummies+pdf In PDF document text
    • http://files.andersonvocal.com/uploads/1/3/0/7/130775025/8056626.pdfIn PDF document text
    • http://files.littletonpreschool.com/uploads/1/3/0/7/130739826/boxafabenupe-vageziril-vofafunufob.pdfIn PDF document text
    • http://migibif.openhorizons.org/uploads/1/3/1/4/131454106/5019515.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/1/0436/4759/8742/files/benigajupopumowolipex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/gikipixuxaxudunazemiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/44509047535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/39619889123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/68958766178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/fuduposimisovakarirevaves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/79663717079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/96657210640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/99443325196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/21061915066.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 8

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_off00007eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFF 5440 bytes
SHA-256: 54805fb12fad9540c820e31ecfcaecf414c3f45a462dd274d65f43c02fa68e6c
font_01_sfnt_off00009174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9174 10112 bytes
SHA-256: 55e4876687f8e997b83a63aabfdf1f991445853273c02d0fecd16d38fcff2bd3

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