Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1778b325576694…

MALICIOUS

PDF

69.9 KB Created: 2020-12-11 04:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 06cb2a9e7d2d25c4c7cd40c6d18bb885 SHA-1: 2ac76609936a1fc020a15fdde1c90232c8eb7386 SHA-256: aa1778b325576694254e3fea811c7f1bab466c19e8d4bfdfbb42979174b180f9
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://trafftec.ru/strik?utm_term=justin+tv+watch+football PDF link annotation
    • https://zadujemerumid.weebly.com/uploads/1/3/2/6/132695269/2155810.pdfIn PDF document text
    • https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/8f6b5d39e6c7af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490542/normal_5fbe0d99dc199.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/87786b5a-798d-43a3-9dee-4e35d83e7d44/20063487006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a96dd772-48ef-4491-a9ed-2aabca16a703/22866885442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/810c271d-024a-4136-bd7d-a20fd7a461db/82442933506.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/formal_black_tie_optional_dress_code.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/42246966888.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/jawewufaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ebee9c6-f422-483a-a731-3b26df3c58fa/xopikuzimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f62b1811-df2c-4ee8-a70a-fdbdfffe9589/59833078407.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_off0000c7b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7B8 4916 bytes
SHA-256: 9c0bd99eb8ca8deb78b502ec9aed35c6d32c0b5f8e6f271e4ce7118318b983cb
font_01_sfnt_off0000d876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD876 10576 bytes
SHA-256: f30edc3083a2a779f5d9eb27940e98cbb4ea5e29f5e87fe7f465ca31866c3709
font_02_sfnt_off0000fc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e