Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7054ce32152e578…

MALICIOUS

PDF

43.4 KB Created: 2020-08-11 22:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 061ecfcd3863efb835f88b85bb19d6a1 SHA-1: b7378c81efbe6ef622394a7997a8474f94407ec5 SHA-256: c7054ce32152e5785405c8e9480e589bb530f35d03c2324cb549256c35ebc37c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as a free download for interview questions, but it redirects to malicious infrastructure. The primary link, 'https://ttraff.ru/pify?keyword=common+interview+questions+and+answers+pdf+free+download', is flagged as a malicious redirector. The document body and embedded links further support the SEO-based link farm tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.ru/pify?keyword=common+interview+questions+and+answers+pdf+free+download
    • http://files.melissaelayne.com/uploads/1/3/1/3/131381720/8a4267178.pdf
    • http://puxedi.avg-ipms.org/uploads/1/3/0/8/130813612/nosadapijimobegizel.pdf
    • http://files.rowanfirstyearwriting.com/uploads/1/3/0/7/130775350/7750949.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/zinuvomadimugexoboxof.pdf
    • https://cdn.shopify.com/s/files/1/0434/4096/3750/files/popejupitosinoxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/101_anti_aging_foods.pdf
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/16260341139.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/jakixujapiwibezuji.pdf
    • https://cdn.shopify.com/s/files/1/0434/0052/8033/files/tonazuvekapukife.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2439/files/lekerogarexorarewil.pdf
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/15726786676.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4717/files/povasabexinixemabulelatur.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b9f.bin
d2051933a9221830512014311a43b9d5f64af57d73781c3e6f838ff108fa6543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 5372 bytes
font_01_sfnt_off00007ddd.bin
47675005b1dd030dd5dd3b122e0bc7c2ccdaaabc108d3f4591881f6e9494a47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDD 10140 bytes

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