Malicious PDF — malware analysis report

Static analysis result for SHA-256 3963f447768c8a8e…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 16:03:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f5c442f8171890fcaf2f6c9daf799ec SHA-1: 793241867a840fa51f1d02644a6b9f0ce648ac67 SHA-256: 3963f447768c8a8eb1b967f40ab95b930b98d6a2d9d05d66238731b4d8e79cec
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=utorrent+app+free. The document body, though heavily obfuscated, also contains this URL and other links, suggesting a phishing or scam attempt to trick users into downloading potentially malicious files.

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=utorrent+app+free
    • http://jatalaz.digistormers.com/uploads/1/3/0/9/130969744/muwiwam.pdf
    • http://files.lennoxheadlandcare.org/uploads/1/3/0/8/130874050/ccd2aa6474f5f.pdf
    • http://files.goldcoastcreatives.com/uploads/1/3/0/7/130775668/vatilakuwakodelen.pdf
    • http://pegudif.ervanariasaomiguel.com/uploads/1/3/1/4/131406149/00d2c1.pdf
    • http://jatotux.bozemanhelpcenter.org/uploads/1/3/2/3/132303382/tomom_datevixikalapa_xokorezex.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5126/files/kerala_abkari_act_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/ada_guideline_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/57568119136.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/zelimipateruwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/mw3_mods_xbox360.pdf
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/3765693578.pdf
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/6068489212.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/82973165470.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2821/files/periodic_table.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/role_of_balochistan_in_pakistan_movement.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/36676110385.pdf
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/86658060923.pdf
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/tijugokubixisuwedopepiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7775/files/54527767543.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_off0000635f.bin
b68cd0533900ef511b216be21dedd7ed1fcd24cf2bbdbc19c0bee149afebc320
pdf-font-stream PDF embedded font (sfnt) at offset 0x635F 4676 bytes
font_01_sfnt_off00007352.bin
2471acbe1bea2fd32b8c77ff1fc1d4daaefb99e7f523b0544805b7ae3e605823
pdf-font-stream PDF embedded font (sfnt) at offset 0x7352 9932 bytes