Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d1b40f766703d2e…

MALICIOUS

PDF

39.0 KB Created: 2020-08-24 05:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77a399007bbcf8b151910105a89f4ab7 SHA-1: 33eb73a5c1221dc9b2f01d120246dd0850e49381 SHA-256: 2d1b40f766703d2ed49cb188b4d944d669f5676add0ea6be9fb51043e3880746
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at ttraff.ru. The document body and embedded links suggest a lure related to 'bday wishes video free', likely intended to trick users into clicking through to malicious content. The PDF structure and link farm indicate a delivery mechanism for further compromise.

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=bday+wishes+video+free In PDF document text
    • http://files.sandiegoceramiccarcoating.com/uploads/1/3/1/1/131164474/kakegiwitu_zivupodidige_juwivumex.pdfIn PDF document text
    • http://remux.hearthisspace.com/uploads/1/3/1/3/131379639/8745783.pdfIn PDF document text
    • http://mabapopi.swindonheritageblueplaques.com/uploads/1/3/2/8/132816202/raworufuregero_kaselokuvep_tamarutawom.pdfIn PDF document text
    • http://rixejo.susamachar.com/uploads/1/3/1/3/131398009/vipaxuredino.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/1/0447/2075/0745/files/dryer_sheets_inside_shoes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/pedipelutolipopabatosod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8896/9882/files/vasovuvusoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8609/2190/files/minecraft_apothesis_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8944/3483/files/xelidigowoxusojelibalegup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6831/0172/files/bootstrap_template_premium_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1367/files/phthalates_test_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0701/5069/files/10240592088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1839/4527/files/adb_shell_android_settings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/70801222133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/44800020186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/accidental_prime_minister_book_free_download.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 1

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_off00005c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2A 5264 bytes
SHA-256: 97b1ab22e8d9974be8dc49d9140e5728d437f949f1bf78a02e4902bf9226796c
font_01_sfnt_off00006e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E28 9832 bytes
SHA-256: 48ea0877eda9fa74c885ee57d999989a59ae9a89c12ba023ed6f851ef31711fb

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