Malicious PDF — malware analysis report

Static analysis result for SHA-256 d079d604b8053962…

MALICIOUS

PDF

58.7 KB Created: 2020-11-02 05:00:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd59bc1a60d74eb891404bf7ea7cee92 SHA-1: da6f8e39324ccd63023cb862e0f87948a2dca078 SHA-256: d079d604b805396290e7b2a161d23caa759554f34b6553c7ee32e20db4fd7243
134 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and an advance-fee scam lure. The embedded URL, https://gettraff.ru/aws?keyword=hamsterwatch+bb+21, is flagged as malicious. The document body, though heavily obfuscated, contains this URL, suggesting it is the primary mechanism for the scam. No scripts were extracted, but the overall structure points to a phishing attempt designed to trick users into visiting a malicious site.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=hamsterwatch+bb+21
    • https://cdn-cms.f-static.net/uploads/4408996/normal_5f9d34af1aef2.pdf
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f9b9b0c7b43c.pdf
    • https://cdn-cms.f-static.net/uploads/4374951/normal_5f8ea772471a2.pdf
    • https://cdn-cms.f-static.net/uploads/4408004/normal_5f9573977bd87.pdf
    • https://cdn-cms.f-static.net/uploads/4421970/normal_5f9a887fbfdc5.pdf
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f8f38996bb83.pdf
    • https://cdn-cms.f-static.net/uploads/4380383/normal_5f9f699004266.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0485/9677/9168/files/survivor_series_1996_diesel.pdf
    • https://uploads.strikinglycdn.com/files/00e64589-63d3-46f0-9301-ed7fb96139c2/cooped_up_meaning_in_hindi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8890/files/jaguw.pdf
    • https://s3.amazonaws.com/donake/adding_fractions_with_like_denominators.pdf
    • https://s3.amazonaws.com/gavexilatuvitaz/chemistry_test_grade_9.pdf
    • https://cdn.shopify.com/s/files/1/0266/9205/9314/files/free_animal_sorting_worksheets.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a44a.bin
6d9a74aee663b22de0be5059bce95d2b2fd441dd4a494e01e1c7c2052c881ffb
pdf-font-stream PDF embedded font (sfnt) at offset 0xA44A 5384 bytes
font_01_sfnt_off0000b685.bin
75c1bc75a4a09e6495a538695691c1a7b98ae7c75aab25b151bcfab05f79ca46
pdf-font-stream PDF embedded font (sfnt) at offset 0xB685 11680 bytes