Malicious PDF — malware analysis report

Static analysis result for SHA-256 c445f654135357f2…

MALICIOUS

PDF

79.5 KB Created: 2021-06-01 04:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e52d9ef6cc77cfe11b217b5834e5d5e9 SHA-1: bfb7dd044018a047908f965f1bbb097a2cb2ab9f SHA-256: c445f654135357f2d7063e078c97ec39e209fbf7ba684ec6e5c676c763d602a6
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or spam campaign. It contains a large number of external links, many pointing to PDF files, suggesting a link farm or SEO spam tactic. The primary URL, https://allytemp.ru/pbw, is likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://allytemp.ru/pbw?utm_term=how+to+overcome+barriers+to+effective+communication PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389823/normal_6016808c73507.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465125/normal_5feffd1103cb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_6023e8c943713.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_603598d17f18f.pdfIn PDF document text
    • https://botefajom.weebly.com/uploads/1/3/4/6/134690565/a3cd7edd8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408346/normal_5ffca62591312.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390684/normal_5fc60fc69fc19.pdfIn PDF document text
    • https://kisuwirabavaruz.weebly.com/uploads/1/3/3/9/133999170/8018060.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373519/normal_5fdda24f97af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421776/normal_5fda1c634ede7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421782/normal_6031ec6b750f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379626/normal_5ff7593c759d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487197/normal_5ffcd2539278f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476595/normal_605cacbe08222.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491671/normal_600ca61ca989b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492871/normal_60230af2487da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478127/normal_606e08c54b7e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506159/normal_6041b6a4cc497.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474445/normal_5fe59282d5563.pdfIn PDF document text
    • https://vosovijuz.weebly.com/uploads/1/3/0/8/130813614/5700308.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412780/normal_5fe49abe78090.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/5df39fdb-f98f-48d5-a4b2-7c26a1290c0f/6775647501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13629c0b-9393-4d00-b2c3-cf4f299693e0/coronilla_a_san_miguel_arcngel.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_off0000f9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E1 5248 bytes
SHA-256: 7d0c6587a7602fa7b7e5e1117128573817da2e801f89a943951317233bdc6ff0
font_01_sfnt_off00010bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBB 10584 bytes
SHA-256: 9b75d0bf710c142ba8d20275a1eb66b0847b571c69faaeddfe1034a2834a9921

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