Malicious PDF — malware analysis report

Static analysis result for SHA-256 77deb58cbdafe99f…

MALICIOUS

PDF

44.8 KB Created: 2020-07-28 13:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66248b0cdd79a52ec63f02daeb566d36 SHA-1: db25b9d8960656ebbf8664325011e70eba5add5d SHA-256: 77deb58cbdafe99f0375abb33330d478f82810a2343a0313de4fc5ccc852475a
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 an 'adb driver installer', suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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=adb+driver+installer+asus In PDF document text
    • http://files.beatricestocks.com/uploads/1/3/1/4/131452872/papajiput.pdfIn PDF document text
    • http://files.beaconhillclassical.org/uploads/1/3/2/6/132695932/3350910.pdfIn PDF document text
    • http://files.faithinhisblood.org/uploads/1/3/0/7/130775163/9a6b260.pdfIn PDF document text
    • http://files.wandahoneycutt.com/uploads/1/3/2/6/132683070/7262559.pdfIn PDF document text
    • http://files.gatewayoflight.com/uploads/1/3/1/4/131438280/miturob_dulizuxodifo_xezorigove.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/1/0429/8414/5049/files/83412975280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/88543817874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/18456096399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/46935056248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/70776935280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/kotogegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/34243919833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/82887152953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/nejirabapavogorazul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2058/3065/files/nalomijugasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/1501951333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/11258202843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6434/5247/files/2564416252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5554/5497/files/26069184326.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 5

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_off00006dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCC 4780 bytes
SHA-256: 6edab6ecd04f5c9703bfe9542c0bd438e4cae757a2f981210fdc31ad4a26229e
font_01_sfnt_off00007e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0D 12724 bytes
SHA-256: 888b4873f66bcfb6af53b0db1472f986da95bc8688812f556c1c141add8c2e5e

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