Malicious PDF — malware analysis report

Static analysis result for SHA-256 af28e04f1371743d…

MALICIOUS

PDF

46.4 KB Created: 2020-08-24 21:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ba28aa56fd07dbd438c4f6f200d8ec1 SHA-1: 9e5541c4a979598cd8f5acae3f658418c206ecf9 SHA-256: af28e04f1371743d9a551fdf3d9ee689ffdec31c8a451359796294483a376592
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to lure users to malicious content. The primary malicious URL is https://ttraff.com/pify?keyword=the+roots+phrenology+free, which is likely intended to lead to further malicious activity.

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=the+roots+phrenology+free
    • http://files.westernsaddlesrus.com/uploads/1/3/1/6/131606011/tutivepodukosesofov.pdf
    • http://vasanoz.northdevonbiosphere.org.uk/uploads/1/3/0/7/130776485/nasezejegi.pdf
    • http://vipuxefe.clooneyns.com/uploads/1/3/2/6/132696323/636747d2851225.pdf
    • https://cdn.shopify.com/s/files/1/0438/5882/1285/files/sale_of_business_contract_template_qld.pdf
    • https://cdn.shopify.com/s/files/1/0444/7030/4935/files/remix_os_for_pc_android_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/btwin_triban_100_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/dibakisazokuwoleguw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0237/9939/files/vapuruwexi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/29497107134.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/70915132798.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/biblia_de_estudio_thompson_para_leer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/varanomavumozomadeda.pdf
    • https://cdn.shopify.com/s/files/1/0429/1523/3959/files/95225536413.pdf
    • https://cdn.shopify.com/s/files/1/0437/6310/5953/files/1996_isuzu_trooper_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/papozezomojup.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_off000077f1.bin
4998aa315424388f1d55213f2e74fb4006daa38cf8f06914baec1847167180f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F1 5004 bytes
font_01_sfnt_off00008903.bin
5797ef21bf18bab24e33cdec61553f3338ab884a323e85e005537c139f457f53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8903 10528 bytes

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