Malicious PDF — malware analysis report

Static analysis result for SHA-256 102d82c07d3301d1…

MALICIOUS

PDF

78.8 KB Created: 2021-03-28 18:36:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abd46d9814aecb4beb5e602870d002b0 SHA-1: df284d797f64df8e93c43570fed14d9ec9b541c1 SHA-256: 102d82c07d3301d1815ffc3fa2bd538f5369b72f69a4346935ae7b995903be7c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with the primary URL suggesting a lure related to quantitative aptitude questions. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, many of which are likely malicious or part of a link farm. ClamAV detection and ML classification strongly suggest malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://zajinet.ru/award?keyword=quantitative+aptitude+questions+and+answers+with+explanation+pdf+for+ibps
    • http://vogudikomi.getenjoyment.net/antenna_theory_and_design_warren_l._stutzman.pdf
    • http://zijafanovidiz.sportsontheweb.net/russian_books_for_beginners.pdf
    • https://cdn-cms.f-static.net/uploads/4386361/normal_60134540157e7.pdf
    • https://cdn-cms.f-static.net/uploads/4450428/normal_60126a1254c63.pdf
    • http://salimom.mygamesonline.org/47717674048.pdf
    • http://pukebebizadolu.mypressonline.com/11124128771.pdf
    • https://cdn-cms.f-static.net/uploads/4370541/normal_602ea95f3ba8f.pdf
    • https://lupirolawa.weebly.com/uploads/1/3/1/4/131453436/wetafolezetononepe.pdf
    • https://pagilosotutan.weebly.com/uploads/1/3/0/9/130970008/2823534.pdf
    • https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/3b93b.pdf
    • https://static.s123-cdn-static.com/uploads/4449193/normal_5fe53b58486ab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dfacb59c-9c5b-49d4-bd79-9d1d01b14e41/92559618187.pdf
    • https://uploads.strikinglycdn.com/files/7befd005-4955-46bd-9557-4eee8a9afa11/duty_to_god_cub_scouts_bear.pdf
    • https://uploads.strikinglycdn.com/files/88a7b3c5-b031-4a2e-a1d2-ec5b7b054860/dictionary_of_architecture_and_construction.pdf
    • https://uploads.strikinglycdn.com/files/c0b97398-d54a-4666-9815-8cf7477f754c/miller_bobcat_250_for_sale_craigslist.pdf
    • http://jetotajasavesi.atwebpages.com/92328427318.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_off0000f6be.bin
c7fbd96f55948a42f6f2694d6ece3c8d7d795b30ea028a4e565ae9ae0832c019		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BE 5676 bytes
font_01_sfnt_off00010a19.bin
3e145a31de3bfee3c0b3a8e42a5d79b213535fb01738208439a36acc589bac3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A19 10440 bytes

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