Malicious PDF — malware analysis report

Static analysis result for SHA-256 da7ecb90351f53f3…

MALICIOUS

PDF

44.7 KB Created: 2020-08-21 07:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b59dd4a4c4bf20bf30be223526b6a509 SHA-1: 290d0ac7d41727afc210dd22648c149b1fe3dc30 SHA-256: da7ecb90351f53f3c70b956671b6425712ef59b04fa8b11ac2920ba4d286060c
194 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and links to a known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'climate change', likely to disguise the malicious intent. The primary malicious URL is https://ttraff.com/pify?keyword=ensayo+sobre+cambio+climatico+pdf, which is designed to redirect the user to further malicious content. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve SEO for malicious content.

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=ensayo+sobre+cambio+climatico+pdf In PDF document text
    • http://files.ptwmlc.com/uploads/1/3/0/7/130740017/7d6f36908e315.pdfIn PDF document text
    • http://files.collinsfamilyhomestead.com/uploads/1/3/0/7/130738801/zeragokutax.pdfIn PDF document text
    • http://files.3dfurniture3d.com/uploads/1/3/1/4/131453054/8222489.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/1/0436/5195/6894/files/adinkra_symbols_and_meanings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/kogezufezexovedibuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3925/0853/files/91809534914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/christmas_music_flute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3587/6776/files/soccer_drills_for_u8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/morphology_and_ultrastructure_of_bacteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/nujafezo.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 5

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_off00006e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 5500 bytes
SHA-256: e152f7b0a85b2d13f5e03d28396699f394f845987abdaa4c31ba179ed14c7c69
font_01_sfnt_off00008134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8134 11004 bytes
SHA-256: 47e4e29fa1a8f678f0b0892f97e64c1b6b99e0a4eb80187bd64c6236bc47eaa4

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