Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b796e37595cc0c7…

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 08:23:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a0a349168350c764de426d576961cff SHA-1: 9a6c746428184aa743341bb6546788120c6bd1ea SHA-256: 3b796e37595cc0c722bd8c3f29d0fca1327bdff2d9ba4b6d7b0e09884358b33f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=chasma+ka+photo'. The document body is heavily obfuscated but contains this URL. The presence of a link farm and a high ML classifier score further support malicious intent. The primary attack pattern involves luring the user to malicious sites through these links.

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=chasma+ka+photo In PDF document text
    • http://files.lachouettealunettes.com/uploads/1/3/1/3/131382841/d80b7.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/1/0432/1135/8372/files/22273470470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/credit_note_report_in_tally_erp_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2279/files/verbal_aptitude_questions_answers_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3703/5429/files/que_es_epistemologia_en_filosofia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/26785901773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/disable_woocommerce_sessions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5977/1557/files/zuxewofekejozodivozuriku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4256/9382/files/avadhuta_gita_dattatreya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1260/4582/files/vezuriperawaxogawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/wonofejurizeno.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 8

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_off00005674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5674 4900 bytes
SHA-256: f0d135494937b13655d547a4b643fb49c48366b81935d2e7d3504b5e7ebaae0a
font_01_sfnt_off000066fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FD 9760 bytes
SHA-256: c329667488af3b95c7c66427bfea4016771ee0c55ed10f6b685a6d402f67460f
font_02_sfnt_off000088b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B4 2832 bytes
SHA-256: ab0b30550c16f0218ea180a56450acc25083be48fb805cb0f6f475dfa13b8319

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