Malicious PDF — malware analysis report

Static analysis result for SHA-256 1084f46a7d3cda3a…

MALICIOUS

PDF

45.4 KB Created: 2020-08-19 20:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1283b11786246bf85271a5b51ff0498d SHA-1: 6ad4b53cd970f923b83ef2d6a16bb46088c88538 SHA-256: 1084f46a7d3cda3aebdec5a94afc5e40cbcbb133088a09b0c76b9bf8358eb0c4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, many pointing to a redirector service at 'ttraff.ru'. This indicates a tactic to obscure the final destination and potentially distribute malicious content or phish for credentials. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious purposes.

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=bascula+omron+hbf-+514c+manual In PDF document text
    • http://files.dpuntenney.com/uploads/1/3/1/6/131606035/9994794.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/1/0433/1057/9865/files/phoolan_ki_burset_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9401/files/mojunixovopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9824/7078/files/xuvuvasanorumasowixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0787/2921/files/antibiotic_sensitivity_test_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/robodesusojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/triac_bt136_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/school_asthma_action_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/9530069588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3095/4655/files/46010879104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9821/7378/files/purijerejodezubexe.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_off00007179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7179 5604 bytes
SHA-256: c8c8ad25084dcf24e24169f55b2573ecabebd52c0c1d58e58e249e2a6c78fec8
font_01_sfnt_off00008469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8469 10940 bytes
SHA-256: d828b9dcd5f509889111d31f07171d68ae1354067cf4f2ff30705970836f5d54

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