Malicious PDF — malware analysis report

Static analysis result for SHA-256 986a2e4e76020d8f…

MALICIOUS

PDF

36.5 KB Created: 2020-08-28 01:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ea463f589bcb10f37000febef0e6f63 SHA-1: b6dd171cfecfd722e9da696d0c2a49e1dad225ad SHA-256: 986a2e4e76020d8f69e80e757bcbd06d69525cf0e77a1cdb624ec74387a996b8
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to accreditation documents. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt. No scripts were extracted from this sample.

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=akreditasi+snars+pdf In PDF document text
    • http://tuvilo.merizzi-psychotherapy.com/uploads/1/3/1/3/131398455/kofojar.pdfIn PDF document text
    • http://files.stevemullins.org/uploads/1/3/0/8/130814535/xubebarik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9224/2588/files/24278273599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3493/files/72727229424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/fojelukanixaruziwed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/long_beep_sound_effect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6158/2741/files/les_analyses_mdicales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5649/4757/files/zofuxulexomejaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/80635082570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5309/4811/files/kamawarabegega.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000457d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x457D 4736 bytes
SHA-256: 0028be97680b1d8b9ef839944ec51dfadb40e0fdcd7d092e9b5605023d8abc69
font_01_sfnt_off00005595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5595 10092 bytes
SHA-256: ff59f8ca73728285f02b9e21d6c53e07e8f2d0bb77bd83dfff9e6ed1c394a787
font_02_sfnt_off000077ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AE 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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