Malicious PDF — malware analysis report

Static analysis result for SHA-256 098a7fbd13c17ebb…

MALICIOUS

PDF

71.2 KB Created: 2020-11-02 01:08:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 83fd73294b7378d93768d68502f46f81 SHA-1: 971b0ec6b7203fc1955f8ded18cf47c7921421db SHA-256: 098a7fbd13c17ebb47ccd269571135a4bcf7681af40edb2d4f01e37ed51913a9
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised as a search result for game codes. This suggests a phishing or scam attempt to direct users to malicious content. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic, likely to obscure the true malicious intent. No scripts were extracted from this sample.

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://gettraff.ru/123?keyword=phantom+forces+codes+2020+july In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8742e1c82a4.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/nudanujurer.pdfIn PDF document text
    • https://nobigifawu.weebly.com/uploads/1/3/4/3/134310244/wixoxitis.pdfIn PDF document text
    • https://faxufoxexukixel.weebly.com/uploads/1/3/4/4/134455740/tikexanudif-munifefuzejat-vixafumasem-setifavupofimax.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/keripabomodepedi.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/1/0500/8726/4451/files/dr._spadone_okc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8253/8403/files/36799425672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/9810/0665/files/51718053476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2661/2378/files/market_leader_elementary_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2888/7706/files/37433961642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/1805/6377/files/11856834785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4387450-e79b-4686-9c09-32172db902d0/occupational_performance_issues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80036f86-5834-4632-aa31-4886d6f2c730/storm_door_with_dog_door_30x80.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_off0000d689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD689 5712 bytes
SHA-256: 2de4b0266375752a1471dff7b0b457dd5130f97d38852d626d30cc90e8f0acbc
font_01_sfnt_off0000e9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DD 11192 bytes
SHA-256: 4e0bb1622065338ffcac9c026731492b288126f19e6191d14f38ff679982c8b1

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