Malicious PDF — malware analysis report

Static analysis result for SHA-256 6608d10ce313a662…

MALICIOUS

PDF

44.6 KB Created: 2020-10-30 00:10:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b17d83a0bac69c67aeaa92686f3efdf2 SHA-1: 17553a28e5473597663cb7d2fc7281d23eff36a2 SHA-256: 6608d10ce313a662a89c940ed331639c8a888317ec17aaeb1e6fbc6ce0aa00bd
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, 'https://gettraff.ru/aws?keyword=haier+mini+fridge+manual+2.7', disguised as a product manual. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and the overall structure suggest a phishing or redirection attempt to a malicious site.

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.
  • 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://gettraff.ru/aws?keyword=haier+mini+fridge+manual+2.7 In PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/pejaramo.pdfIn PDF document text
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/xawiwew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f8fdb288bac8.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/pugavurepisuxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387807/normal_5f8e976b3ca2c.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/7878292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414335/normal_5f94bd19440f3.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/subud/acuerdo_286_ceneval.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/juwonegam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc76ce9a-8572-4436-87da-59c1b16e05ee/4440523357.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/tibofanozuturomozupegesid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23deb24b-9056-48c8-a82a-f305c08650e3/12353455762.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_off00006f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F42 5256 bytes
SHA-256: 1380848e268c9c47243a727262b0c597a1b1812435095c99b4bc0612450bd776
font_01_sfnt_off00008119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8119 10744 bytes
SHA-256: 0500e517e6de2aa4c52d1a0cd6377803e06757053e26a37ed27b6e348167653c

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