Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccafcbb370176a0…

MALICIOUS

PDF

54.0 KB Created: 2020-08-01 21:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57c4e8bf6e6aa4347c7727a4ae4742b3 SHA-1: c7d503da7a7b29a6bea0043b70adce5b7655c32a SHA-256: 6ccafcbb370176a0ac1cd461aa92078f077c07214c15602ed0cd7aae4da613e0
154 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'Kayle build s6'. The PDF also hosts a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious 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=kayle+build+s6
    • http://files.lgpristineclean.com/uploads/1/3/0/9/130969204/kipimafo.pdf
    • http://files.doodadsandfandangles.com/uploads/1/3/2/6/132680901/ronifawodizod_setupuvosukuf_wewofokodefeju.pdf
    • http://files.gamesoundplanet.com/uploads/1/3/1/6/131606128/1440c4e9f92b.pdf
    • http://files.growinghappyroots.com/uploads/1/3/1/4/131454850/3896582.pdf
    • http://files.christinamascarenas.com/uploads/1/3/1/0/131070207/pebonokekesizi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3414/0072/files/80332693462.pdf
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/53140792722.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/ride_on_acdc.pdf
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/dalenuwanexerixulavesidix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/30057883820.pdf
    • https://cdn.shopify.com/s/files/1/0438/0704/7840/files/3444048922.pdf
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/silowosemujafisib.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/redadosadetetakoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/dejafizomixezosusadufada.pdf
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/vujojopozototo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/12500625889.pdf
    • https://cdn.shopify.com/s/files/1/0435/9304/0029/files/kigoduzifogedowopegal.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_off00006dfd.bin
8f9e0a93d3036a2a67558dfaa2738371e46e390882522893c2ce4efc1f4ad644		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFD 5088 bytes
font_01_sfnt_off00007f61.bin
9548cecc9d7df031b25f87d6602acf0e19cd6964031a85a5b83037225710dace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F61 2700 bytes
font_02_sfnt_off00008af3.bin
7b6c5ad9531a785e6ad64db0c62c4432e320352fded5bf8f1662a938944500f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF3 12852 bytes
font_03_sfnt_off0000b446.bin
7d0e6a83a1da9b2d5990ce778067ec1397a580a7bf8ae285401f903e21b56580		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB446 16328 bytes

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