Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b44d5fd9a22ead0…

MALICIOUS

PDF

53.8 KB Created: 2020-08-04 19:04:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55aa25334bc94d0f5f01d761dc9364fc SHA-1: f2d0dc99832c1eb6ae3bc424c6b56c22475b0262 SHA-256: 7b44d5fd9a22ead010fa1220d72261ecab4db54320f779545e28f3888971c9e8
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to drive traffic to malicious sites. The presence of numerous links suggests an attempt to lead users to potentially harmful content or phishing sites.

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/pify?keyword=maria+west+side+story+original+key+pdf
    • http://files.madlyeclectic.com/uploads/1/3/1/4/131483253/nuwitoduku_xafozovininu_lekilirox_navagad.pdf
    • http://files.faloonaagency.com/uploads/1/3/1/4/131437283/nikiwubobelo-mosunonelu.pdf
    • http://files.the-trilinq-sg.com/uploads/1/3/0/7/130739704/zidemevibel.pdf
    • http://files.centrocha.org/uploads/1/3/0/8/130873870/7918256.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3355/9203/files/bikatapafitesilumasak.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2578/files/52120250704.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/mepexesazu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/jotumige.pdf
    • https://cdn.shopify.com/s/files/1/0434/8071/1325/files/sasenesozukud.pdf
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/bonurolobeset.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/kizizujufifazezaxek.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/61583988088.pdf
    • https://cdn.shopify.com/s/files/1/0440/1692/6870/files/bawir.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/vofamivogigirixafarolot.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/44822475647.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_off0000940e.bin
a7dd5af2325fafc14bff2a5db09e20978994206af6a93cf7155685b91c056b8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x940E 5472 bytes
font_01_sfnt_off0000a6e5.bin
76e2c42c19f41bdef996022dc3eae9c6758f216dfa13e5fc30b84ad37dd49af8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E5 10700 bytes

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