Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6b373528c0e2d3…

MALICIOUS

PDF

40.8 KB Created: 2020-08-07 22:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2ea51a07cf972fe40382f53f7d179bc SHA-1: 56521022e28aa3b3a43030c5c07c7ebb020de52d SHA-256: 5a6b373528c0e2d35babb5616bb64b7f47a0c994da02a5d634d7a922e2462fb9
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The embedded text and heuristics suggest the lure is a fake 'free online PDF to Word converter'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=convert+pdf+file+to+word+doc+free+online, which is known to lead to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or malicious redirection attack.

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=convert+pdf+file+to+word+doc+free+online In PDF document text
    • http://files.spauldinglibrary.org/uploads/1/3/1/4/131406518/1441329.pdfIn PDF document text
    • http://files.pavilionrecoveryhouse.org/uploads/1/3/1/4/131413550/2327980.pdfIn PDF document text
    • http://gavako.sallyjaneheit.com/uploads/1/3/1/4/131453540/0b3526c0abaea87.pdfIn PDF document text
    • http://files.neoyouthelite.com/uploads/1/3/1/8/131857334/9684656.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/1/0434/8759/2608/files/biblioteca_de_alejandria_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/munemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/zimuponobakujumala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/84020114553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/nemovelid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3749/8276/files/65063490080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/32844881521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/fatotifudobobanofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/41598909674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5353/0788/files/42763092270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/esquema_corporal_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2522/5112/files/83400687305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/mivinidapogitolid.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_off000062c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C4 4816 bytes
SHA-256: a514768c2a8a63084e861fbc185407d81bac568383eecb9a8b84d62eef2c6e8c
font_01_sfnt_off00007351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7351 10200 bytes
SHA-256: 6cd6bb1a5b5813e5cb8ee9904e704a5bd77805cb107dec40b794cf300c4f4bc1

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