Malicious PDF — malware analysis report

Static analysis result for SHA-256 605bc64e083fee83…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 23:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6130c9a5e5e29f2b0be8774b83de77ab SHA-1: d9e084fa83925ad936f1a3d37ed1dd5f03d7dd4c SHA-256: 605bc64e083fee83b6fadf333b981fb4c4657a561c30d3b8ff256d8c3ec17ec7
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for a fake PDF download. The presence of embedded URLs and the ML classifier strongly indicate malicious intent, likely to redirect users to a phishing or malware distribution site.

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=impuesto+alcabala+pdf In PDF document text
    • http://files.yizhixu.com/uploads/1/3/1/3/131398102/fisenizadak_redafex_mitutalojejid.pdfIn PDF document text
    • http://files.herbalhealthandhealingarts.com/uploads/1/3/0/7/130776042/9519705.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/1/0431/9969/2958/files/zokoruwelovedinewatimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/52182065543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/pokizeluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6660/6247/files/bikap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/sukuzeroxapenusoran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0675/4717/files/gugibulaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/50984803868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/25464796073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/driver_evaluation_form_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5975/7734/files/boojum_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/adding_integers_word_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/apostasy_in_malaysia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2709/files/gabriel_s_oboe_flute_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/fejaluzulimojomatezimolap.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 7

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_off00006698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6698 5280 bytes
SHA-256: 5920e8bed741ce4a254f77039fd7f51ab52416a698dd8c72f318a9c5836f977b
font_01_sfnt_off00007870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7870 11636 bytes
SHA-256: 8207d712ce6709a2f512ff2227197da6fec1d6b7f43f92bd7942a3cdb994e23d

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