Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5d3d26586d5974…

MALICIOUS

PDF

71.1 KB Created: 2020-10-04 10:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0b9ff71ad8d7e76db73a452b5a61256e SHA-1: f7dbaf04f6e10cee0f82b607c3a5a511798a8ad2 SHA-256: da5d3d26586d5974ce4ac5d6986a7357f410b9c628ea91d31bfc93ec1eeacbe4
254 Risk Score

Malware Insights

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

This PDF file contains numerous links, including one pointing to a known malicious redirector at `https://gettraff.ru/strik?keyword=destiny+child+uncap+guide`. The document body, while truncated, suggests a lure related to a game guide, likely to entice users to click the malicious link. The presence of many external PDF links and a redirector indicates a link farm or phishing attempt designed to lead users to malicious infrastructure.

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.
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://gettraff.ru/strik?keyword=destiny+child+uncap+guide In PDF document text
    • http://saxepeniz.meanbaotoronto.com/uploads/1/3/1/0/131070420/rikizuzemaw_fulaxoluzogi.pdfIn PDF document text
    • http://files.jackiecheuvront.com/uploads/1/3/1/4/131438459/tilugizebejiva-wizovo.pdfIn PDF document text
    • http://files.bradscedarshop.com/uploads/1/3/2/8/132814241/6465283.pdfIn PDF document text
    • http://files.sheawhite.net/uploads/1/3/1/3/131383727/6e1b0779464.pdfIn PDF document text
    • http://netetik.lighthouse-baptist.org/uploads/1/3/1/0/131071164/jujodakivafexu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c0a4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c0a4.bin)
    • https://uploads.strikinglycdn.com/files/27bed94f-d6b1-40de-bd93-3ebb9bd6fe5f/putiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de219c7c-a8f4-48b1-8e5f-c34783bb954c/vafizos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3c8334-1993-4e31-9e5c-c0664c576fc6/gajejigaxogimaxexubevir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/singer_model_99_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2182/0058/files/bronsted_lowry_acids_and_bases_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2739/3443/files/47956723663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0603/3824/files/fitbit_case_study_swot_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c5ed023-3154-46e2-8ea0-9a7ace71747a/70107400451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/283daca8-7f77-4bc7-9e1f-277e4c078452/4081019421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb0fa156-1799-4e91-b570-f92ca127cbd7/15280469372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ebf5bb7-e8cb-47de-887a-62d76c698a22/69452367040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e524a54-015b-4b4b-ac6e-97fedb0f36d9/gixidop.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 extracted file (font_00_sfnt_off0000c0a4.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000f79a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000f79a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0A4 5340 bytes
SHA-256: 2edd96e6b3efdd42fecadc33c7259bc3cbc172e67dbd7079b4d425b24b0fc34f
font_01_sfnt_off0000d2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E1 10696 bytes
SHA-256: 9418f1fdbe3853e8f5be436d2e4c917a6f16aca7b2c73c156d7e510626da77ac
font_02_sfnt_off0000f79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79A 17192 bytes
SHA-256: ac20513e15ecc20749dc49a9e6cf6e3b0cb23af854797cf0f230bf5eca17ae67