Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd4e9790d0a14d2…

MALICIOUS

PDF

45.9 KB Created: 2020-08-19 09:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: feb5a548548fef303ea19b60480dc7b9 SHA-1: 5adf5684221d46633db79ff3f1effa1b9aae9d9a SHA-256: 1cd4e9790d0a14d2357beb6a3d76707e93f1481dfff5ff8cd0001b7aae61b042
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The PDF also contains a large number of external links, many hosted on Shopify, indicating a link farm for SEO poisoning or distribution. The primary malicious URL is used to redirect the user to a second-stage payload.

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=shao+kahn+combo+guide+mk11 In PDF document text
    • http://files.gittesatre.com/uploads/1/3/1/8/131857114/tamid-tufepupagu-lezanilisipo.pdfIn PDF document text
    • http://files.yogacreations.com/uploads/1/3/0/9/130968933/murekekubo_rogem_sixofipol.pdfIn PDF document text
    • http://files.drakebaynature.com/uploads/1/3/2/7/132740384/petulereginesibi.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/1/0438/7730/2427/files/92802658682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3146/8951/files/310080053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9268/7513/files/super_smash_bros_melee_downloads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9077/5965/files/refuwexif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/brilliant_legacy_episodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/guteguzofuxubelirijigoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/clinical_infectious_disease_case_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/puxedebomusateferi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/vafezo.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 2

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_off00006a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 5404 bytes
SHA-256: 8db5477a0e3130c73c7f1aefe72d321f970c7d1a88f7380e500335698c61362b
font_01_sfnt_off00007cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB2 14904 bytes
SHA-256: d97eb72f256c310cb9943966e847a6d4d71bc7185cdce7ea4ed33c3e8feebc81

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