Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0ab1b065ddb5bd2…

MALICIOUS

PDF

43.7 KB Created: 2020-08-25 03:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab69af7f96e20321ab49797661c0dfae SHA-1: 3a645e56a949cf7452774242f156590bf0471614 SHA-256: b0ab1b065ddb5bd2a6b094e06b079a758120af149b5d117a56e47add4b1b7994
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure for an authorization letter example, which is a common tactic for phishing or malware delivery. It embeds numerous links, including one pointing to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=authorization+letter+example+pdf`. This indicates the document's primary purpose is to redirect the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=authorization+letter+example+pdf
    • http://files.stephaniegaveau.com/uploads/1/3/0/7/130739069/9016820.pdf
    • http://pubif.zacharyscruggs.com/uploads/1/3/2/7/132741334/divasuxibebezod.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/google_drive_link_with_idm.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/japan_tsunami_all_video.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/auditing_principles_and_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/66400666770.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/concept_classification_characteristics_of_entrepreneur.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/61696023998.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/60765298269.pdf
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/bill_alexander_painter.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/who_formed_the_neoclassical_school_of_criminology.pdf
    • https://cdn.shopify.com/s/files/1/0463/2680/8731/files/14875757774.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/worship_music_chords.pdf
    • https://cdn.shopify.com/s/files/1/0436/6611/2662/files/364241515.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_off00006cff.bin
5bf6083dbef7f63eead5cf18ed3a3a37fc0aa78bd85a1beefe12c36f92408675
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFF 5212 bytes
font_01_sfnt_off00007e9c.bin
b05083764bb37596a6b45ede1b8bf18df4aac25d3b9fa104ecc5dc9407f52a84
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9C 10248 bytes