Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70b672979244557…

MALICIOUS

PDF

42.1 KB Created: 2020-08-09 05:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7720383c24410eab17f40e379cca214d SHA-1: 035bf48b44fa03fe229e7c045a76bdef23d5936b SHA-256: b70b672979244557945f424213fbb428e40da43cec4f1f621ac1af6321f925bf
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body and embedded URLs also indicate a lure related to 'jumbling reasoning question pdf', likely intended to trick users into clicking the malicious link. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, suggesting an attempt to obscure the malicious destination.

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=jumbling+reasoning+question+pdf
    • http://files.whirlpoolservicecenter.net/uploads/1/3/1/0/131070597/77bfb706.pdf
    • http://files.netcor.co.za/uploads/1/3/1/4/131454012/gesuzew_lovutas_nipomavoruk.pdf
    • http://purobobim.jbconsultingandpsychology.com/uploads/1/3/1/4/131437508/vidixajimu-wimexaz.pdf
    • http://files.illume8.biz/uploads/1/3/1/0/131070378/kupuguti-pinuguwotetevup.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/86176394954.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/nijofibaxagusupobofuna.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/mibojeleki.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/nibobememunog.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/rawofimetawixevifok.pdf
    • https://cdn.shopify.com/s/files/1/0432/4406/0839/files/flow_cytometry_principles_and_clinical_applications_in_hematology.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/83724913867.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/dujonuxoxujifamuwegiwugi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6604/files/wadepi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/28512171171.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/25885635762.pdf
    • https://cdn.shopify.com/s/files/1/0431/9543/3117/files/nilaboxudesawetapapekuj.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_off000066af.bin
ea00341d947b927ccf37aa02529e94fef33dc918c8811318c9a663cd89a8f9a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AF 5616 bytes
font_01_sfnt_off0000799e.bin
82051b3fc3e2fdefdf29f77c5879013892483c5e70bcad832c0cbd38fc0b88f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799E 10024 bytes

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