Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe71ed8475457bb…

MALICIOUS

PDF

74.7 KB Created: 2020-12-17 15:20:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c9ab10dc6b75db274a7462e9f25935ed SHA-1: ab062720e3cc73060f154885d3b7a18c8e3fe863 SHA-256: 9fe71ed8475457bb922a656b29e40a501e7c6fa79147b2b1004f557ef2a91a5b
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, https://cctraff.ru/strik?utm_term=lsr+projection+fandom, is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://cctraff.ru/strik?utm_term=lsr+projection+fandom In PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/1982379.pdfIn PDF document text
    • https://sufidubiziden.weebly.com/uploads/1/3/4/7/134732268/fowuso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02c46a7-e6f9-4084-95e4-9354ae236ca1/tekonsha_brake_control_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/bewars_telugu_audio_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/infectonator_3_achievement_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2dd271-98e5-4255-9ae9-ccc8584d8e64/34236875084.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c9b1a5bc066edfa528b7/t/5fc1718d3f75b166430af1b2/1606513037753/can_you_use_instant_pot_as_slow_cooker.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/guide_pour_communiquer_en_franais_4me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f3067b7-74a4-4847-b202-d586264941ec/xupatazajigapemebe.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_off0000e5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AE 5284 bytes
SHA-256: c25285cbd388c3b593c4edea1db9c3f3ab95f559d88f19ab348ead247e4d4486
font_01_sfnt_off0000f79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79F 11940 bytes
SHA-256: 477130aeb5a0875faa3528ee61f349a496a45a51a2d377974abb945c34f2cbd5