Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c86b1df83756a6a…

MALICIOUS

PDF

55.2 KB Created: 2020-08-18 23:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80e0ca18cc62e604564592004ab68f05 SHA-1: 2837077a8280089a023905592eb2836a884daf03 SHA-256: 5c86b1df83756a6a85c63c6f4dc4a9d3ccdd64db38a32210d4165c0ef21a7967
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of this redirection scheme. The presence of a link farm and a malicious redirector strongly suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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=marketing+strategy+report+assignment In PDF document text
    • http://files.onsfbay.com/uploads/1/3/1/0/131070375/3215495.pdfIn PDF document text
    • http://wabej.fbcgodfrey.org/uploads/1/3/0/9/130969465/a6112.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/1/0432/4642/0132/files/bitdefender_antivirus_premium_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/setesixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2039/3380/files/bacteriology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5261/4311/files/bonomakidubanavedunade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4371/7274/files/beam_column_base_plate_design_lrfd_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/xenomanezumegefofepexatik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/dikugezirexewulemabezum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/didapotajadul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/pidunepekuvanidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/zexewulexunejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8461/1733/files/jugesepirekabukoseloval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/92264329108.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4A 5068 bytes
SHA-256: 40c19c30a6b3011aae5e374d40e824db5da401e47a295cd1a449215742e007af
font_01_sfnt_off00009e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E76 10272 bytes
SHA-256: 8c5f9d0923302de74c6262c68cd632cd231a3fca326e686ac2a38fe33c438796
font_02_sfnt_off0000c17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC17A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.