Malicious PDF — malware analysis report

Static analysis result for SHA-256 16de9029c55ffd74…

MALICIOUS

PDF

42.6 KB Created: 2020-08-16 01:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bdd3e80f7649184528cb82b49135a3d SHA-1: 7203d968c07dc010f2f9b9d239c3f20732bb3586 SHA-256: 16de9029c55ffd743421ce1831dda00a116ecfd9810db8f39739a6a098787bfe
174 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure. It also exhibits characteristics of a link farm, embedding numerous external PDF links, one of which is a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of multiple embedded links suggests an attempt to disguise malicious activity within a large number of seemingly benign 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=2010+kawasaki+brute+force+750+performance+mods
    • http://putiti.mtm-inc.com/uploads/1/3/1/1/131164250/muvogafesufav.pdf
    • http://vikobi.keckmanagementroofing.com/uploads/1/3/1/4/131408854/faserowur_mivaba_fenadopo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/mobility_scooter_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/18185074294.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/88292714665.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/38298635510.pdf
    • https://cdn.shopify.com/s/files/1/0430/9418/0001/files/nevaniz.pdf
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/model_attestation_de_travail_word_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/lijamafutelonovumonutu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005496.bin
9bf5e9a3b023e52087fda74fbaaabcaac08139ed40be814d65d2c3ec053de3c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5496 5884 bytes
font_01_sfnt_off00006896.bin
2eb48a98fad2734317f3bd30539e595858fd1f0ef889f696060c2a57d86b3755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6896 11532 bytes
font_02_sfnt_off00008fbc.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBC 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.