Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a985d48cb8c7524…

MALICIOUS

PDF

48.3 KB Created: 2020-08-28 22:04:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 202145224e72322db9b203a9ea7efd94 SHA-1: 022b9a497af8bae7af175022be12694b9a6f6a07 SHA-256: 5a985d48cb8c75240ae0f6f7dadff7cd656fd60039b0a7d83d572b22268cc4dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, with one prominently pointing to a known malicious redirector infrastructure. The document body, though partially garbled, includes text related to 'ge oven error code f3' and the URL, suggesting a lure to disguise the malicious intent. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic, likely to obscure the primary malicious URL.

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/wix?keyword=ge+oven+error+code+f3
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/7938/4734/files/napubidatawen.pdf
    • https://cdn.shopify.com/s/files/1/0460/1911/7223/files/50041772133.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/57211237292.pdf
    • https://cdn.shopify.com/s/files/1/0466/3934/9925/files/bagobeze.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/ars_goetia.pdf
    • https://cdn.shopify.com/s/files/1/0457/7751/8748/files/download_fifty_shades_darker_movie_in_hindi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8887/9521/files/auditorium_seating_design_standards.pdf
    • https://cdn.shopify.com/s/files/1/0459/8090/9735/files/litobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/gipijojugalekol.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed84d129d6d0410a94a5d885818b2d5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f68eb444f0f46489efea14ce3ee0019.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/analfabetismo_digital_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0434/6350/8121/files/descargar_antivirus_para_android_apk_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0438/6609/5781/files/lubodowiwekonajuma.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c1b.bin
60223280b166360495894ac8033b6e15c92293944950de682f823436cbd180dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1B 4512 bytes
font_01_sfnt_off00006b7a.bin
8bcd2e92844b66cfda7b2b36ff30d0761e884552cea45b5e9e93e2ef416c7892		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7A 10868 bytes
font_02_sfnt_off00009006.bin
260d0bbab015a8c85cf4fe67fabc4bce5dbab7a845fa425d6c4af055876b865a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9006 16108 bytes
font_03_sfnt_off0000a4de.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DE 4324 bytes

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