Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a1e45e488ad21d…

MALICIOUS

PDF

48.3 KB Created: 2020-10-29 02:30:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b0445857d3a88542d48928a008860fe1 SHA-1: 37ba26dba3ab8920aac53c6c3aa2543e0d9d417b SHA-256: 29a1e45e488ad21de441706886a54c4ceee2f9adb4a6a74e8f09e96b525a628a
184 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to disposable hosting and redirector infrastructure, indicating a link farm or SEO manipulation tactic. The presence of a link to 'gettraff.ru' with a keyword suggesting file conversion further supports a lure to potentially malicious content. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent to redirect users.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=merubah%20file%20pdf%20ke%20excel%20online In PDF document text
    • https://pirivelel.weebly.com/uploads/1/3/4/5/134505874/gavip.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/daa0e7dbf5a.pdfIn PDF document text
    • https://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/wanemewituw-jagerezanomivu.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/7865913.pdfIn PDF document text
    • https://dojarugakafep.weebly.com/uploads/1/3/4/4/134471698/6886704.pdfIn PDF document text
    • https://zabugusu.weebly.com/uploads/1/3/4/3/134311035/nojakos.pdfIn PDF document text
    • https://lifagixuwemup.weebly.com/uploads/1/3/0/9/130969738/2c76d76.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/55a7c75aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/23e5a45b-76f1-4a9d-88fe-b68c7f98b39b/magnuson_park_seattle_wa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/341094f1-7533-4ee6-9d30-e1c19fa7e956/dimema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/865b3120-e82a-418f-8627-fb9d590c7f5d/bolitap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81e81ac9-103a-4ea7-9a41-8f8e3f9cd808/teach_your_child_to_read_in_100_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/xizugubatilerixes.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/litasudobozusas.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/kefuzezadajexowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfe44733-951b-4ec8-af70-69a418563c55/jefutowapunixipamexemudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c753e383-43a1-499a-a477-83c4adf49eed/72379724606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae53074e-2e2b-4b03-b657-c63aba06e860/cyberlink_powerdirector_15_kickass.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiwovowus/19077602823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fea4b671-5d14-4e67-8840-75e62e872537/24706945794.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9E 5144 bytes
SHA-256: 8c30f1b20efc3d1f6fdb47cd84ac12b8221259f51a9581a2b13f9c6731daad99
font_01_sfnt_off0000810f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810F 10752 bytes
SHA-256: ed4d0f21fb6bf8be55f19681e198718828814a9772e2244d2381cc20b424bc6e
font_02_sfnt_off0000a588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA588 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c