Malicious PDF — malware analysis report

Static analysis result for SHA-256 021b6d5eb09bc67c…

MALICIOUS

PDF

72.0 KB Created: 2020-11-17 14:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8e2b28c4ded57c19d52d263e4f1b6be6 SHA-1: d4899cc06fcbaa2f177ca6778851b547f8bec2ff SHA-256: 021b6d5eb09bc67ca616376d32b356e0ef2544fe9650a2fc882eb1dd9edd45f5
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to S3 buckets and Weebly domains, indicative of a link farm or SEO manipulation tactic. One URL, https://traffnew.ru/aws?utm_term=hardboard+sheet+sizes, is directly embedded and likely serves as a lure. ClamAV and ML classifiers strongly indicate malicious intent, specifically classifying it as a phishing trojan.

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://traffnew.ru/aws?utm_term=hardboard+sheet+sizes PDF link annotation
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/nebewufazodilen.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/332245.pdfIn PDF document text
    • https://mizemetugez.weebly.com/uploads/1/3/4/3/134322353/dc8053.pdfIn PDF document text
    • https://zitofizifejiza.weebly.com/uploads/1/3/4/7/134706741/bupezerubu-pubolisumupogin-susiret-pegor.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/numegubowalonan/87658909999.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/ielts_speaking_task_2.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/cute_girl_baby_angel_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/13664137340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b98d51fb-3299-480f-ba97-2cc6e0793283/demagixikura.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/madewiwipubaginixilesito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00cae1b8-eb15-4a49-bf44-5d492279242b/94271744151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f33b4f-7a1b-44e5-8102-1114f5e1b13e/zusasufutav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81e68294-cb32-4434-8356-e447a2ff43f4/vekajorojo.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_off0000dd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD18 5032 bytes
SHA-256: 355adea03ed6ba34267b6f0cd041ba5bb4b18835a937e924adacc0dfb6112da8
font_01_sfnt_off0000ee2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2D 11012 bytes
SHA-256: f0b6e1cc230172ee09e25dcdd65a38c43a080c9c3c9bd452e7b088a187652b2e

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