Malicious PDF — malware analysis report

Static analysis result for SHA-256 292bcf24f5f4c734…

MALICIOUS

PDF

45.2 KB Created: 2020-08-09 03:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00e5c706fc2c5520c120ddff696458e1 SHA-1: 97e182a6913e79e28353b560296b95c6bbc40913 SHA-256: 292bcf24f5f4c7344ed01670440ce8db190ad495ee8ecbbacf66232f4dbe91e0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The primary URL, https://ttraff.com/pify?keyword=new+headway+beginner+test+book+pdf, is flagged as a malicious redirector. This suggests the document is designed to lure users into clicking these links, potentially leading them to malicious sites or further stages of an attack. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.com/pify?keyword=new+headway+beginner+test+book+pdf
    • http://files.hydronicspecialtysupply.com/uploads/1/3/2/6/132695195/silot.pdf
    • http://lojaxive.derekjasnochmusic.com/uploads/1/3/0/8/130874038/nujawajizofosukogej.pdf
    • http://files.shanestay.com/uploads/1/3/1/4/131437017/ganuguwuradibeba.pdf
    • http://files.tampapanhellenic.com/uploads/1/3/1/4/131407823/b33c8bc93.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/84770928572.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/29239016249.pdf
    • https://cdn.shopify.com/s/files/1/0441/0851/3432/files/caprice_no_24_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0429/9233/7059/files/zobivojabiliketimobod.pdf
    • https://cdn.shopify.com/s/files/1/0437/2443/9717/files/ncert_physics_textbook_class_12_part_2.pdf
    • https://cdn.shopify.com/s/files/1/0438/3067/3565/files/85405567300.pdf
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/lonisanijuwifemojebapo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/jixoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/kebox.pdf
    • https://cdn.shopify.com/s/files/1/0439/8841/8718/files/65542247375.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/mamuj.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007248.bin
20689c78c25960c2a008a84d72d45a3289947e93e72f5aae817b820cfd93e612		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7248 5640 bytes
font_01_sfnt_off0000858f.bin
8747b0799cbbc8f64517220d61944f1e6f63a3ea89cbcb89ad293eaa47cb816f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x858F 10068 bytes

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