Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac5442b40e3f4f9…

MALICIOUS

PDF

67.7 KB Created: 2020-08-03 20:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0aea8c651036918d817ec7652a7dbcc8 SHA-1: 316f3bc71be17e18bcdb1ea9a6a93abaa85d5739 SHA-256: 7ac5442b40e3f4f994d38066da0f25c362dc55419ca8ddc37ba9e8e227ddfb4a
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 and heuristics indicate a lure for free downloads, likely leading to phishing or malware. No scripts were extracted, but the embedded links are the primary attack vector.

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=balanced+scorecard+example+manufacturing+company+pdf In PDF document text
    • http://files.totternhoememorialhall.com/uploads/1/3/1/3/131379134/21409c692d.pdfIn PDF document text
    • http://files.sbednarski.net/uploads/1/3/1/4/131484328/6fa309.pdfIn PDF document text
    • http://files.cornerhealthfoods.com/uploads/1/3/0/7/130738943/dofijikolofa_gabuzu_bifuvutijoked_xuwudaxeda.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/1/0438/1740/2530/files/bilurazuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/nujex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1668/2663/files/lugujunodadatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9021/5073/files/koludimatilabomilit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4342/2359/files/kuvunelulupiwuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/investment_valuation_damodaran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2831/files/53593560525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8383/files/javascript_play_sound.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/28075361784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/18284492425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/kenmore_ice_maker_not_working.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 4

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_off0000cb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB27 5696 bytes
SHA-256: cc5c6bfdf1f90b74de95fd5cd96b2f54ef350033c8b79c07ca8e97929cc24e6c
font_01_sfnt_off0000de7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7B 10316 bytes
SHA-256: eab76f2e17f8d82321d195320ae70e691b94a6e603126b08a73b6bb453b73b18

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