Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b188bb318a97a7…

MALICIOUS

PDF

43.4 KB Created: 2020-08-18 16:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 486c66aa2dba43371003329ddc9b8615 SHA-1: e57ae1e96d8a306ca032e5a9dcd2228c5792a19b SHA-256: 42b188bb318a97a7b498de320c0e7ab5b08f84e0f7f3b193ad9adbfc693e4945
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=nomenclatura+das+amidas+pdf.

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.cc/pify?keyword=nomenclatura+das+amidas+pdf In PDF document text
    • http://tunegot.photoelectricsynergy.com/uploads/1/3/0/8/130873782/9e316.pdfIn PDF document text
    • http://jofumu.banderaarchitecture.com/uploads/1/3/1/4/131437914/22a3be0883.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/1/0430/2585/8711/files/16304449356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/definicion_de_placa_bacteriana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/52584625196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/bathukamma_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7132/1752/files/56501033186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8951/6962/files/26511862230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6963/5734/files/pabadekaxefosalom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/gukerukagalopusigoju.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 1

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_off00006a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A19 5268 bytes
SHA-256: eff960c83a26bd139e90df813f79a1a3af3a53ae6e143e7ea45042f70a275536
font_01_sfnt_off00007bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEA 10940 bytes
SHA-256: 5445febd7190778ad4f6b742e1a456defe9fa4b53bc126cbee3747b6a2244070

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