Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8aa8307b693be58…

MALICIOUS

PDF

69.8 KB Created: 2020-12-13 16:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3db53ee85e7c1677b8a40a718dd01ae2 SHA-1: 9c75a13420769f59b6b106153924891a5dd1bbb4 SHA-256: a8aa8307b693be58b2dc22b82ae9e33a9cd889c9c2d1806bff864886b63f2689
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://trafficel.ru/aws?utm_term=bleacher+report+wwe+raw PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479470/normal_5fc744a76ffe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473645/normal_5fa70d87a6b8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419642/normal_5f99d21374328.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/0863e8d2-d161-48bb-a861-9c69e87e2d90/20238627086.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/39113619923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b86273f6-f788-499d-88de-4b8493e78c2f/ziguzawosisup.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc158a49698b02c7f23b694/t/5fc59d9b4e98326c02d28cba/1606786459961/1984696558.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/75668024711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93c2a798-2880-4391-be63-e7d2ae385b2b/30017856894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f165d7-a44f-4a38-b075-9341bdb33154/rubuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e24442b-5911-4ef6-9d28-e0fc0ac4174f/lugevajafebojiri.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/fotadovok.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc69e96bdb33045eee9cc09/t/5fca3149fedaa13a486c10f7/1607086409955/petafizokud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa0ba2d-6522-4977-b915-3ca501b96349/91832475978.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_off0000d5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C8 4984 bytes
SHA-256: 7a8b1d685d9a223146b0078114a16529870318c2c0e219851c6e91cab49cdb6d
font_01_sfnt_off0000e6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C7 10552 bytes
SHA-256: 243a890abf17c5fe73751b7f86dabd09068e9601da33dc2a47669bf4aae798cf