Malicious PDF — malware analysis report

Static analysis result for SHA-256 148ed522c4c7f297…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 09:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2abca3911d7da4009fc02ee5980d92c SHA-1: fe0030f577a5c6b8a35471a7a8c134d122bca2de SHA-256: 148ed522c4c7f297fd8413d05a581313ddf357c96fab72cfaa1e8d63a5eea36a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at ttraff.com. The document body, though heavily obfuscated, contains the same redirector URL and a list of other PDF links hosted on Shopify, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness.

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=enrolment+form+l%25C3%25A0+g%25C3%25AC In PDF document text
    • http://files.1stusinfantry.com/uploads/1/3/1/3/131379743/5548488.pdfIn PDF document text
    • http://files.nanopintechnologies.com/uploads/1/3/2/7/132710661/6808280.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/1/0428/9314/8313/files/50606417604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4460/8932/files/bonjour_tristesse_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/diluxamitipariwida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/42341364807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/kuwubitikajapokovamape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/wivireposivuraxif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/bagunipumom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/57805294806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2598/8757/files/measurement_worksheet_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/764823321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1751/9772/files/demande_aide_logement_caf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1306/3335/files/82194201892.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 4

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_off000063ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EE 4944 bytes
SHA-256: dbf47970958cd0b14aa5574ec3056d179384a51c5aa0f7e88dc842385dfd660a
font_01_sfnt_off000074a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A4 12744 bytes
SHA-256: 3bd649c83c22fb4561d7d24c79ae2fee29a955e10fc088e646a3da2f72fc3319

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