Malicious PDF — malware analysis report

Static analysis result for SHA-256 3418c9fe8716e8d7…

MALICIOUS

PDF

47.6 KB Created: 2020-08-06 08:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68caad87685234752b3387727e4e0638 SHA-1: 07ae26e60ffe92bb9e31c90c946a92f25a791808 SHA-256: 3418c9fe8716e8d7ff81320877f11d28140b30fcca25d0db8ce6ef46cd2137bb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a document title for "battletech miniatures rules pdf" which redirects to a malicious URL. This indicates a phishing or scam attempt designed to lead users to potentially harmful content. The presence of a large number of external PDF links further suggests a link farm or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=battletech+miniatures+rules+pdf
    • http://files.dorzasdrivingschool.com/uploads/1/3/1/8/131871535/vupivuwofosogu.pdf
    • http://files.authenticbathroomrenovators.com/uploads/1/3/1/4/131410158/xoxewixifoweto.pdf
    • http://files.diestrodecuerdas.com/uploads/1/3/0/8/130874162/a1d8340b98246e.pdf
    • http://files.rockymtlaceguild.org/uploads/1/3/1/4/131438127/9829069.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/refraction_of_light_at_curved_surfaces.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/tajodexawed.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/que_es_radio_atomico_en_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/76765562544.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/kimivipupivafuwarupubuvu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8378/3575/files/peraxewuwujuzoziza.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/21575022612.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/zirafebujebabi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/50285384383.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/jukulojazadidalawona.pdf
    • https://cdn.shopify.com/s/files/1/0440/6558/7352/files/alliance_vanilla_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6618/files/49557793323.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_off00006db5.bin
edea2d314f60b1c8377b1fa4720f7e6a3efc3e0e14f78d8eb249471ce73a8279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB5 5216 bytes
font_01_sfnt_off00007f42.bin
bea0458e2a506f554037c9432c1e53da382593e398a96ce4f3937ead9501ce7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F42 10448 bytes
font_02_sfnt_off0000a2d2.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D2 4324 bytes

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