Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b282986f71cd1c0…

MALICIOUS

PDF

45.6 KB Created: 2020-08-19 17:23:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fec42fc3d2c4c14db7f92a1611aa02a2 SHA-1: 4633807297c35da2196b57b16807745c0e0e3ec1 SHA-256: 0b282986f71cd1c04af629946d57de4b86af87b684928999d5506798a53c4b34
202 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) which is flagged as malicious. The document body, though heavily obfuscated, contains the same URL, suggesting a phishing or scam attempt to trick users into downloading further malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tspsc+hall+ticket++group+4 In PDF document text
    • http://files.russianspoon.com/uploads/1/3/0/8/130874369/8060980.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/79415703375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/30077789719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/13000302427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3605/7501/files/20486771354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/44334877852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4162/0119/files/tableau_priodique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/google_doc_checkbox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/49144215520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/39380219250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/dunije.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 3

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_off00006013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6013 5296 bytes
SHA-256: ebb84dd6ab9273ef2fadb3c42cf7b5c7a8cfabefb4a21d069655279c324735e2
font_01_sfnt_off00007211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7211 5944 bytes
SHA-256: 690d7616f87c203ce51995037c33ed96b17656d0b9c6aa71b4903d8f8171cc9b
font_02_sfnt_off000085d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D7 10564 bytes
SHA-256: 6bbceb641b9064f9e03a9bcac9c9a74e46fc002e73f3f53a662a816e1cdc78c2

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