Malicious PDF — malware analysis report

Static analysis result for SHA-256 4438f6765ef4ba05…

MALICIOUS

PDF

44.4 KB Created: 2020-08-22 20:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7fc055c21042c6712bc0319c67b755a SHA-1: 43f7299f0e795afe0bf65ac8b43917728d1bb4bf SHA-256: 4438f6765ef4ba051f4417211bb951fe159f662cd332b47cab41d38a520dc2e8
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a URL related to 'cic canada visa application form'. This link is designed to lead users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify but point to potentially malicious content. The document body, though partially corrupted, also contains the malicious URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=cic+canada+visa+application+form
    • http://finuj.jameslimbaugh.com/uploads/1/3/1/6/131607712/a9bef4535c32d.pdf
    • http://moleseb.shaunpeknic.com/uploads/1/3/0/8/130873951/vokamupitadiju-kuwowejef.pdf
    • http://tiroje.disruptivenewyork.com/uploads/1/3/1/4/131483492/pemubovosuv_sanab.pdf
    • http://files.newconnectionsmetrodc.com/uploads/1/3/0/7/130739593/ce12c71.pdf
    • http://patitama.nicoleadrienneart.com/uploads/1/3/1/6/131606597/durolebekuvokov.pdf
    • https://cdn.shopify.com/s/files/1/0436/7102/7865/files/bhagwat_katha_in_marathi_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/pijadazatuwirena.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/sefesijogaverelomokawaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/nobisarowakonowa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/buvererafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/bovoxemimibisovebunoki.pdf
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/47646381859.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1685/files/life_in_pieces_episode_guide_season_4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/liwukepurenugiweda.pdf
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/legonukurabikuzevamef.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9382/files/advanced_vocabulary_and_structure_practice.pdf
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/tumigififo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5360/5273/files/fofaluz.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/
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/tum

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fed.bin
4cbfa2ab0f2e26dbf2c666234c17689029548370448768b69c0e89e32c51166c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FED 5264 bytes
font_01_sfnt_off000081b8.bin
b6885604cfc491befc1811dae09bc55dcce933623581fd54458c6d4a1b120684
pdf-font-stream PDF embedded font (sfnt) at offset 0x81B8 10172 bytes