Malicious PDF — malware analysis report

Static analysis result for SHA-256 5169fa9a68aeb184…

MALICIOUS

PDF

42.7 KB Created: 2020-08-16 18:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c17701d859867f5feac63ef58933487b SHA-1: 883f4438bac3fb40b848342b75932252a101b012 SHA-256: 5169fa9a68aeb184b44e2b1f9c786392b57fb2bb56a18e0b911f0fccbdb1c0db
128 Risk Score

Malware Insights

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

The PDF file contains a link disguised as calibration software, which redirects to a known malicious domain. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The presence of a malicious redirector link is the primary indicator of malicious intent.

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.com/pify?keyword=laptop+battery+calibration+software
    • http://files.retailresumes.ca/uploads/1/3/0/7/130739385/2c4348c74.pdf
    • http://files.joyandjoebaby.com/uploads/1/3/2/7/132740293/zogaribibo.pdf
    • http://files.upbaseballsoftball.org/uploads/1/3/0/8/130814229/80009.pdf
    • https://cdn.shopify.com/s/files/1/0431/2272/0922/files/africa_twin_accessories.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/standard_catalog_of_smith_wesson_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/7878/5951/files/english_conversation_lessons_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/zavalevofevalopekuse.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/safuvafofejanid.pdf
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/13995666430.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/gufepin.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/bachna_ae_hasseeno_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/anteaters_guide_to_writing_and_rhetoric_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/anemia_por_deficiencia_de_vitamina_b12_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/jafep.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/92514720914.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_off000068a1.bin
d371fe65c092805f5cf99484c58acb6a40a80b70618336f654bd91df23517d2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A1 5284 bytes
font_01_sfnt_off00007abd.bin
b88307164f9ddb19bbdf2d84308eb2b76dfda2925bb25419d28873446c079e33
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABD 10164 bytes