Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b1a37e83246972…

MALICIOUS

PDF

59.9 KB Created: 2020-08-20 09:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14df77e81ccd2bfd7e94240c0b64e2e2 SHA-1: bf7ee1ebe58928895b32093189dae691be85ea1d SHA-256: 72b1a37e83246972b240c968d3612f8034189b70b6cfa2fcd4201fae8a1587bb
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external sites, many of which are part of a link farm designed to appear as free downloads. One critical heuristic identified a link to a known malicious redirector, https://ttraff.ru/pify?keyword=pica+trastorno+alimentario+pdf, which is likely the ultimate destination for the phishing attempt. The ML classifier also strongly indicated 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.ru/pify?keyword=pica+trastorno+alimentario+pdf In PDF document text
    • http://files.gsoblackbelt.com/uploads/1/3/2/7/132710676/1454249.pdfIn PDF document text
    • http://jusos.yfbf.org/uploads/1/3/0/9/130969724/xonawep.pdfIn PDF document text
    • http://favid.amazingpakistanis.com/uploads/1/3/0/7/130776407/vagezepegomedalel.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/1/0439/1878/6728/files/nolejibitazojoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/e9_88_b4_e8_81_b2_youmaker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/20672297413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3237/9545/files/birovuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/pibujevageruw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/babexipumatedegelelevezus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2804/3160/files/cambridge_academic_english_upper_intermediate_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/xafotenisuvowupolova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/sedak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/snt-_tc-_1a_2017.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 2

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_off0000a21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA21A 5300 bytes
SHA-256: 7a36b9c5a70c6318915c8ac971273a6493f8dc62efdce54c5a14682deef067e9
font_01_sfnt_off0000b400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB400 14828 bytes
SHA-256: df73effca53b437f0e27a093f83ec658479b087098dbd0eff70c859cedc95199

Open this report in the interactive analyzer, or submit your own file for analysis.