Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d12abc73802e2e6…

MALICIOUS

PDF

42.0 KB Created: 2020-08-03 03:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a83ce24d3d597501870a5e03d10570a9 SHA-1: d7eeb16bd00ffa746576de86f2ac50a89e5614db SHA-256: 8d12abc73802e2e6cf356d8a59d0d606f68262af6040365775b6500c23b38138
140 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, forming a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=wii+u+mii+qr+code'. The document body also contains text related to 'Wii u mii qr code' and instructs the user to scan a QR code, aligning with a QR code lure for phishing or malware distribution. No scripts were extracted from this sample.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=wii+u+mii+qr+code
    • http://files.eguastella.com/uploads/1/3/1/8/131871690/4656610.pdf
    • http://files.whitepineconstructioncompanyllc.com/uploads/1/3/2/6/132681233/suvutewager.pdf
    • http://files.earthenhairandbody.com.au/uploads/1/3/0/8/130874489/zikat_sodet_donujozitinano.pdf
    • http://files.medgaming.com/uploads/1/3/2/6/132681976/2764249.pdf
    • http://files.topspotfruitmart.com.au/uploads/1/3/1/4/131453432/doleweguzojujud_siraxovetadil.pdf
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/64572718503.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/nitefetosogajelowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6260/7518/files/38810527027.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/bulla_dragon_ball.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/80641747059.pdf
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/to_love-_ru_darkness_season_2_uncensored.pdf
    • https://cdn.shopify.com/s/files/1/0435/7259/2801/files/xefugamiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/volume_booster_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/morukixosorojosizavasaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdf
    • https://cdn.shopify.com/s/files/1/0428/8482/5247/files/95453551594.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/duwaxufezemurogagur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.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_off00006870.bin
d69e784680220c186ca9d325b8ddeb55bf959fa42426e537f892f148d39c242d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6870 4804 bytes
font_01_sfnt_off000078b9.bin
507f7c6a4174011c09fa499f870ef154ec206459066c63f08b31c082e75193d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x78B9 10204 bytes