Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d62b67d2d4e02e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-01 16:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18b9c7bede368c2f1d7862a33c1b5b52 SHA-1: d724edbf288a1b744d8c39672f3a067ffa266000 SHA-256: 19d62b67d2d4e02e291d92c090bd5c77d0dd045bb61a57fd35df3e1ef6c84d91
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier as malicious and contains a critical heuristic indicating a link to known malicious redirector infrastructure. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary malicious URL is https://ttraff.com/pify?keyword=asa+example+paper, which likely serves as a lure for a phishing or scam operation.

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=asa+example+paper In PDF document text
    • http://files.thesentimentalgift.com/uploads/1/3/1/4/131454549/sosadad_dunidaborij.pdfIn PDF document text
    • http://files.tomitago.com/uploads/1/3/0/8/130873893/welifi.pdfIn PDF document text
    • http://files.elknwillow.com/uploads/1/3/2/6/132695692/969dc13.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/1/0440/5864/0549/files/kavizutetumoludutonijot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nebisineseboji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5713/3221/files/tuwebujufejifidewakivexit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/gogoxogeritamuwope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/98365980960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3133/files/91914090302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/lilivatowam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/jufajusotakavot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/17498599330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7260/1766/files/65735506133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/51751667749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jibivugutujul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7250/files/pulonulo.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 6

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_off00007ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD3 5020 bytes
SHA-256: 7f5f95a5d1bb8675996b9317c0410b6dd910b82171a00d5f9a201429bda60aa6
font_01_sfnt_off00008bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD1 10208 bytes
SHA-256: 50fb2fdcab49304378b6a464b61019dd274e7c72a3218a9b5f9209b2f6e68990

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