Malicious PDF — malware analysis report

Static analysis result for SHA-256 356666e980a7663f…

MALICIOUS

PDF

76.0 KB Created: 2021-01-10 11:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: cf6015eaaf86d5098527b7921c047dc2 SHA-1: ed44e735d908d87b463c5dbe7f4df1e72438fa21 SHA-256: 356666e980a7663fa4abea2e6928a2264c488ff667bddb95e609cb0968bf8226
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a PDF link farm, with the primary URL pointing to a game download. This suggests a phishing or malware distribution attempt. ClamAV and ML classifiers also flagged the file as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffset.ru/wb?keyword=rally%20championship%202000%20game%20download PDF link annotation
    • https://site-1168173.mozfiles.com/files/1168173/the_walking_dead_nowy_sezon.pdfIn PDF document text
    • https://batatifenosi.weebly.com/uploads/1/3/4/5/134513642/pumuxuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/vumivatuvi/9hbhehb/wolverine_moviemaker_pro_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/XyXJH0Z/hatchimals_colleggtibles_tropical_party_playset_season_4.pdfIn PDF document text
    • https://dadixuva.weebly.com/uploads/1/3/4/0/134018012/2d5a0694156a.pdfIn PDF document text
    • https://bilopoxowug.weebly.com/uploads/1/3/4/4/134439404/sumagu-pogupulepegivin.pdfIn PDF document text
    • https://site-1172631.mozfiles.com/files/1172631/preschool_and_kindergarten_learning_games_se.pdfIn PDF document text
    • https://zeburunonuf.weebly.com/uploads/1/3/4/4/134458398/a6c49a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/moxelogizituwepatoz.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/44945565727.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/guidelines_for_antibiotic_prophylaxis_of_surgical_wounds.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/66917328860.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_off0000d75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75A 4956 bytes
SHA-256: cc66b050325f4b6d2b2e230696362381f01d3d75123cd018ed23ed3e46e66c46
font_01_sfnt_off0000e865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE865 5864 bytes
SHA-256: 276c1e531c4531690de2a888eedd86421768426456b9687e371d80ee043e0d5f
font_02_sfnt_off0000fc5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5B 11624 bytes
SHA-256: dc11b0af69c2c9bd01feec1129b8dd1821e03a41f78db8500423309aa7ab74f3

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