Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7712656a5936e4…

MALICIOUS

PDF

49.1 KB Created: 2020-07-20 16:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 688eb40bf09fdb7d7e4ec87791334d0c SHA-1: 308a8d08551599aa3d5cf99d371783e48cf03e7e SHA-256: 8e7712656a5936e4141afe8c555e9373193f6103c6a455fa45aaae8d3c1a8b83
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a redirector to a known malicious infrastructure. Another heuristic indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or traffic redirection. The primary malicious URL identified is ttraff.cc, which is likely used to funnel victims to further malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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://ttraff.cc/wb?keyword=c#%20tutorials%20point%20pdf%20download In PDF document text
    • http://files.repa-program.org/uploads/1/3/2/7/132712011/depux.pdfIn PDF document text
    • http://files.lambertparalegalservices.com/uploads/1/3/1/1/131164557/mifimegoredu_pifeg.pdfIn PDF document text
    • http://files.wolffwords.com/uploads/1/3/1/3/131379815/3b897894c9f7d9.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/1/0433/0687/7080/files/lofolevunukexus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/mavufopibedojowibajugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/45676433044.pdfIn PDF document text
    • https://sajakus890828289.files.wordpress.com/2020/06/raduzipelemu.pdfIn PDF document text
    • https://lakuvipejuz106751964.files.wordpress.com/2020/07/42594534719.pdfIn PDF document text
    • https://niwojeza.files.wordpress.com/2020/07/93944789061.pdfIn PDF document text
    • https://reterezuro.files.wordpress.com/2020/07/jesudosaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/sunagifotevegitafijopowud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/ditid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/vubifol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6707/1894/files/tubonemew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/nufeparuraso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1537/9866/files/36190103434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/zureravesazubumor.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B1 3508 bytes
SHA-256: 91bc08623b4822c638e6bd2dbe739cc74fe53d54f74265c911cce228fe650b7a
font_01_sfnt_off00009041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9041 12620 bytes
SHA-256: e30cece5460ae0958fcfe6e3ddf150a67b5f8c54931af0696936d109ae797d39

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