Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ddb7a767b050a1d…

MALICIOUS

PDF

44.1 KB Created: 2020-08-21 21:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c6fa0d87f43f322d07d47cd826ac1e5 SHA-1: 000a89b1fb7581ade1731bb7228716bbcca88f33 SHA-256: 9ddb7a767b050a1d417ee2f9bd1c58114dcc232f3f6792d4f6aadac3e8f09d8b
202 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector, pointing to a URL associated with known malicious infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains a URL that appears to be part of the lure. The primary attack pattern involves tricking users into clicking a malicious link disguised as educational content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=jawahar+navodaya+vidyalaya+omr+sheet+pdf+2019 In PDF document text
    • http://rupoxep.verycoolgiftbaskets.com/uploads/1/3/2/8/132814930/kakidurolaka.pdfIn PDF document text
    • http://sozasiz.samtoth.com/uploads/1/3/2/7/132710712/dawipinelomeje.pdfIn PDF document text
    • http://files.gateaumarche.com/uploads/1/3/0/9/130969499/5690647.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/1/0432/0952/3355/files/89879731039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7037/1493/files/apotheosis_mod_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0056/9753/files/keto_diet_foods_list_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/74002115162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3337/5399/files/33487257546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/22396047152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/xonizoxovujuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7883/4583/files/bamadaxuvotukaroxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9409/7576/files/clinical_infectious_disease_david_schlossberg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9550/4536/files/66286880480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/85234466117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/77437997614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/doxoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD4 6008 bytes
SHA-256: 139affa65e7fe1e0d51199bc69cecefea9efd5fad196a140c845903c40ae6c21
font_01_sfnt_off0000803d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803D 10100 bytes
SHA-256: 22df204dbaf0b02e8ec8737ea04ac5925cef42c269c582387a4fa3471e79c366