Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf5fa75f18e8a31…

MALICIOUS

PDF

110.6 KB Created: 2020-08-04 16:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e29bddbd1a9248335bbe668a4eff60 SHA-1: 6c1d125c7656e3100bf4e3941573e94ebbb99180 SHA-256: bdf5fa75f18e8a31e472a5415fe6398196a5ef9f74c4e74524df1f7c4d4a2721
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=abnormal+psychology+butcher+test+bank+pdf'. The document body, though heavily obfuscated, contains text fragments related to 'abnormal psychology butcher test bank pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious content. The presence of numerous Shopify links, while mostly benign, contributes to a link farm strategy.

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.ru/pify?keyword=abnormal+psychology+butcher+test+bank+pdf
    • http://files.pinehollowranch.com/uploads/1/3/0/7/130775228/goxesalozoperoxe.pdf
    • http://files.charityfamilyreunion.com/uploads/1/3/1/0/131070109/borujebufiwosusix.pdf
    • http://files.hackettville.com/uploads/1/3/2/8/132814247/wofulirono.pdf
    • http://files.myrainforestpets.com/uploads/1/3/0/7/130775743/5393615.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/jijujawagafenober.pdf
    • https://cdn.shopify.com/s/files/1/0438/3863/6192/files/baroque_guitar_plans.pdf
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/luwasokokuwir.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/wezavugewo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6741/5457/files/download_kitab_asmaul_husna.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/reduvima.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/jozudowodag.pdf
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/mejiru.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/62849678357.pdf
    • https://cdn.shopify.com/s/files/1/0441/2522/5112/files/kokoruwofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/59557489636.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/discord_how_to_cross_out_text.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_off000174d8.bin
097e01f3200be808de8d84b45788c2d4a80c0a2336f23679ca8741aa72216a7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x174D8 5864 bytes
font_01_sfnt_off000188a4.bin
a1ef83aafac1e6d4e7e940b5c0711f3cd9777c7aa72ad52183e4cb2fac5c0a0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x188A4 10788 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.