Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cf08ee9589bad0…

MALICIOUS

PDF

40.4 KB Created: 2020-11-05 04:31:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e65a3293be8b3057304a1c1b5da5c57b SHA-1: b9fbb88d6f47fd34c3d29a11392508ee39606de7 SHA-256: 09cf08ee9589bad0a09b9680b6f083093c81d0e8f87c35bc53f6a10ddda299b5
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ggtraff.ru/strik?keyword=beaker+with+ibex+motifs+made+of'. The document body also contains this URL, suggesting it is presented to the user as a clickable link. This indicates an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/strik?keyword=beaker+with+ibex+motifs+made+of
    • https://cdn-cms.f-static.net/uploads/4383170/normal_5fa0cb781d37d.pdf
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f9e75b71ef4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/258bfec8-3f35-474a-9ab7-00d4fc54dad9/724144804.pdf
    • https://s3.amazonaws.com/fogibi/59940229414.pdf
    • https://s3.amazonaws.com/dorobukasawituw/90794674239.pdf
    • https://s3.amazonaws.com/petikamov/78560569855.pdf
    • https://s3.amazonaws.com/falevi/seven_half_bloods_shall_answer_the_call_to.pdf
    • https://s3.amazonaws.com/zakunafu/carpers_understanding_the_law_7th_edition.pdf
    • https://s3.amazonaws.com/ligole/fnaf_ucn_apk.pdf
    • https://uploads.strikinglycdn.com/files/696368d3-df82-45e7-8ecd-6d7cbd99631c/wajenizugexas.pdf
    • https://s3.amazonaws.com/nonabafat/arcsight_esm_user_guide.pdf
    • https://s3.amazonaws.com/gupuso/job_autonomy_definition.pdf
    • https://uploads.strikinglycdn.com/files/291341a0-5909-47ea-b71a-f243a53dcc34/formal_and_informal_letter_writing_examples_in_hindi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e90.bin
0b1439d884caa0fbcfd2f05a5aff0387eedeea119c1f8348b221d2531c83ea8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E90 5528 bytes
font_01_sfnt_off0000714c.bin
0287f462a18da516dc7bd16dafb0ff6ba0e68fa38384cebd5ab50c7c0a34237a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x714C 10508 bytes

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