Malicious PDF — malware analysis report

Static analysis result for SHA-256 a808ae300c7c8fdd…

MALICIOUS

PDF

71.5 KB Created: 2020-12-20 11:09:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5bfbc5f385a7b3c6db1407274c9d3ad SHA-1: bdf16871c02e95fb593abfc2471e91d0fd995018 SHA-256: a808ae300c7c8fdd7512d663e91d37f0af8e3b1b97489e2ae02b29bdeca17295
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains a large number of external links, likely for SEO manipulation or to distribute malware. One of the embedded URLs, 'https://trafftec.ru/strik?utm_term=annuit+coeptis+meaning+in+punjabi', is a primary indicator of this activity.

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://trafftec.ru/strik?utm_term=annuit+coeptis+meaning+in+punjabi
    • https://vokewubepil.weebly.com/uploads/1/3/4/4/134443825/cdae38295a6.pdf
    • https://cdn-cms.f-static.net/uploads/4373297/normal_5f89dafb9e4e0.pdf
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f87230706cb1.pdf
    • https://cdn-cms.f-static.net/uploads/4379960/normal_5f8b3a7f83f7c.pdf
    • https://dipitamadupod.weebly.com/uploads/1/3/4/8/134882687/jotaf.pdf
    • https://cdn-cms.f-static.net/uploads/4450639/normal_5fdb001833cc9.pdf
    • https://static.s123-cdn-static.com/uploads/4482407/normal_5fca2c5b8490f.pdf
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/6927965.pdf
    • https://cdn-cms.f-static.net/uploads/4481418/normal_5fbd2d2390c0c.pdf
    • https://cdn-cms.f-static.net/uploads/4425504/normal_5f97828d56922.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/vavale/forgotten_realms_calendar.pdf
    • https://s3.amazonaws.com/genijusemu/irregular_nouns_and_verb_agreement_worksheets.pdf
    • https://s3.amazonaws.com/rojalexipokadaz/math_worksheets_grade_8_word_problems.pdf
    • https://s3.amazonaws.com/zoromexemuzid/virelak.pdf
    • https://s3.amazonaws.com/gumagabu/gukefarujogo.pdf
    • https://s3.amazonaws.com/liluvad/flight_simulator_3d_airplane_pilot_apk.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_off0000c9bc.bin
89cc85d09861d582fc660ac555bded3d378daeedc5e6067ab52bf653fab397d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BC 5332 bytes
font_01_sfnt_off0000dbce.bin
0fa2066c4062a945b4d6762a06a9f49d742cb453e5027c58a3a592c48154159c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCE 3524 bytes
font_02_sfnt_off0000e954.bin
cf7c8843719c939ffa5d9e953eb2f7b11774b748cfa7e38494bcd9273bc2b005		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE954 11624 bytes

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