Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a63d196305e29cc…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 11:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 839ca750960e04ec5a9d1631105e8c0e SHA-1: 64a0cfc390591fc76fdccf2b0d67450ca3e675ec SHA-256: 3a63d196305e29cc0a482e5dcd5be89ef8e7a2cab18294f0952ec37b0409cc29
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its extensive use of external links, a technique often employed for phishing or redirecting users to exploit kits. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.cc/pify?keyword=javascript+blob+pdf+download, indicating it leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, with the first being https://cdn.shopify.com/s/files/1/0433/4456/0281/files/wubipibemafaruzorudoned.pdf, suggesting a link farm designed to lure unsuspecting users.

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.cc/pify?keyword=javascript+blob+pdf+download
    • http://files.northbristolrfc.co.uk/uploads/1/3/0/8/130814329/5288233.pdf
    • http://files.mmdrentals.com/uploads/1/3/1/4/131406344/e65f93.pdf
    • http://files.rabbitmountainlavender.com/uploads/1/3/0/7/130738625/futevukumuj_lulamatix_libujuferebetux.pdf
    • http://detew.aprillesdanceprints.com/uploads/1/3/0/9/130969060/1822272.pdf
    • http://files.sarasotagreenpoetry.com/uploads/1/3/0/8/130814515/nijobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4456/0281/files/wubipibemafaruzorudoned.pdf
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/kitchenaid_convection_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/95035098916.pdf
    • https://cdn.shopify.com/s/files/1/0438/8664/1304/files/31247547730.pdf
    • https://cdn.shopify.com/s/files/1/0432/9940/5977/files/weather_channel_95531.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1245/files/wixavuji.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/43547203475.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/most_important_full_forms.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/boss_me_80_owner_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/fazidamesotakegeropavufo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4858/2820/files/78352857130.pdf
    • https://cdn.shopify.com/s/files/1/0436/8757/5705/files/48182027501.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_off00006a30.bin
afba3c936d73245097fac5f924e7793a66ff5bf73d9ef6b9cf43ce1e983a2e95
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A30 5428 bytes
font_01_sfnt_off00007cc6.bin
90a8501978ffacee5a17ad745fbe8b2789b562b38e762440b5fa6ec95e08ae02
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC6 10128 bytes