Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a68d5d2386edeeb…

MALICIOUS

PDF

78.7 KB Created: 2020-12-24 22:17:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 0d73ab334b07cfa9bea4de2c762939d3 SHA-1: 16c25812194f99e7c5b3481e49bd7f84843896ca SHA-256: 7a68d5d2386edeebb04ace4f3e2647f11d0d8269514086355100f06134fa7c13
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier. It contains a large number of external links, many of which point to potentially malicious or spammy domains, suggesting a link farm or phishing attempt. The presence of embedded URLs and the ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=5e+life+domain+goodberry PDF link annotation
    • https://lapaluletegole.weebly.com/uploads/1/3/4/6/134679291/garapamubekotano.pdfIn PDF document text
    • https://bapidovomefizeb.weebly.com/uploads/1/3/4/3/134382768/2ae58e5d7.pdfIn PDF document text
    • https://fileduwefevara.weebly.com/uploads/1/3/4/3/134384607/vudixex.pdfIn PDF document text
    • https://detosujedeke.weebly.com/uploads/1/3/4/3/134371576/c572abf.pdfIn PDF document text
    • https://duxoberadu.weebly.com/uploads/1/3/4/7/134718286/sitem_mojapugibiviwu.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/8c233ea5-cc71-4ffb-8acc-8e1ba6e00dbf/ge_stacked_washer_dryer_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/71343992588.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/93286190281.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/british_council_ielts_dates_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce4c774-cf72-48f6-afec-75f80fb1c5fb/46756241313.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/92476224258.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_off0000f6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BE 5320 bytes
SHA-256: ef17b9511c3be8c2b0abbb5ecbc3ce351098fc5099d4413018c1028eec70a4b0
font_01_sfnt_off000108c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C9 10892 bytes
SHA-256: 97599b0ef371095a03a321fd31a9b9e16b096cead7dd274b1afcad47455bc649

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