Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e1ee4aa96183959…

MALICIOUS

PDF

40.7 KB Created: 2020-08-24 12:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9713dd2597f328b1ef3adb78f80710a7 SHA-1: 088fdefed1a5bd8c8733b9d9a4892d804294d9fe SHA-256: 5e1ee4aa96183959244a4687b1eee85d4b724fd48e7e316038a90045cb01903e
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 resources. One prominent link, https://ttraff.cc/pify?keyword=cheat+engine+6.+5++for+windows+10, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'cheat engine' and a URL, suggesting a lure for software downloads. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy to distribute malicious content.

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=cheat+engine+6.+5++for+windows+10
    • http://files.popmovee.com/uploads/1/3/0/9/130969322/xuwubagabiwena.pdf
    • http://files.drivenbrand.com/uploads/1/3/1/3/131381804/jidave-tawikenoxo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0451/7930/6135/files/6336739235.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/55754171884.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/carnival_of_venice_violin.pdf
    • https://cdn.shopify.com/s/files/1/0440/8868/8790/files/arabic_letters_practice.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0432/0962/1664/files/mexod.pdf
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/18288405123.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9206/files/thermic_effect_of_food.pdf
    • https://cdn.shopify.com/s/files/1/0432/1918/9915/files/astaghfirullah_dua_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0449/5346/9083/files/miller_and_levine_biology_textbook_teacher_s_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/vijebiruveredazaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/1997/files/wapetudixobum.pdf
    • https://cdn.shopify.com/s/files/1/0435/1993/4628/files/79201663020.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_off00005f2b.bin
e900c6ce19248a34c504b2ed330e89f7b944a9490b0df9f70fc1ca4a5d47aaff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2B 5640 bytes
font_01_sfnt_off00007274.bin
b40000b7b9fc47537fd4bb50419694d8d3673aabb0111dfcfc400cf3541049e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7274 10456 bytes

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