Malicious PDF — malware analysis report

Static analysis result for SHA-256 c016495de63bc053…

MALICIOUS

PDF

41.5 KB Created: 2020-09-30 03:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 29066b0fdb8fe2ecbe2d1501a6840b36 SHA-1: 26eef2d252d5066518d288ce76ad2af26f7066eb SHA-256: c016495de63bc05393cb11a5f7e54394ecc91bfa0259d4a0bbe25742d4251a3a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site disguised as an energy outlook report. The presence of numerous PDF links indicates a link farm strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?keyword=bloomberg+energy+outlook+pdf In PDF document text
    • http://files.richardpwenzel.com/uploads/1/3/1/4/131483138/87f49ba9.pdfIn PDF document text
    • http://dosasuf.faithbyhearing.net/uploads/1/3/2/7/132740214/e2f9acc52.pdfIn PDF document text
    • http://files.guidingsuccess.org/uploads/1/3/0/8/130874490/9987927.pdfIn PDF document text
    • http://nafazo.charmed-liebling.com/uploads/1/3/1/3/131384306/1179549.pdfIn PDF document text
    • https://site-1037894.mozfiles.com/files/1037894/febupemilubojiriku.pdfIn PDF document text
    • https://site-1036636.mozfiles.com/files/1036636/tujilejimoninefune.pdfIn PDF document text
    • https://site-1037172.mozfiles.com/files/1037172/24275986393.pdfIn PDF document text
    • https://site-1036725.mozfiles.com/files/1036725/38541654320.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3064/5416/files/61831849143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7378/8321/files/pojusaneje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/lokefoxefodiremopogisidaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/aditya_hridayam_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/cooling_fan_switch_2001_honda_civic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7835/2034/files/39214104690.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_off00006383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6383 5328 bytes
SHA-256: 715bdb4f7f9eaf0c9e24acfdd824ce2b6dbacd07ab4901e00a6c5f47a3dd5ab8
font_01_sfnt_off00007598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7598 10424 bytes
SHA-256: beacb8cde1c2269cb3e5709f90d9bba9edf39264bfaa32a18b824d16def63b28

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