Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c1ac60f57035e7a…

MALICIOUS

PDF

90.3 KB Created: 2020-08-24 11:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722d4bc8c050a2eaac6459e52cce119b SHA-1: 0ca249df08dc644d7c29f4af1b11cf8f27a42183 SHA-256: 4c1ac60f57035e7a5376a4b7ae0d433faba1ae8246b7ef614ef722126ebc0e03
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=aha+guidelines+acute+pulmonary+embolism'. Another critical heuristic identified a large number of external PDF links, suggesting a link farm. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The low-severity heuristic for urgency lures provides context for the social engineering aspect.

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=aha+guidelines+acute+pulmonary+embolism
    • http://files.jeffbeckpersonaltraining.com/uploads/1/3/1/4/131455463/1541304.pdf
    • http://files.radicalrootsherbs.com/uploads/1/3/2/7/132740814/kemosomesipeni-kafuwigaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/weparidifotokewosumuse.pdf
    • https://cdn.shopify.com/s/files/1/0437/9836/4321/files/social_psychology_kassin_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/attribution_theory_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1533/files/jolapobijetopexubob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/4966651679.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/alter_ego_plus_b2_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/ropapexuvobudogulofex.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/biblia_ortodoxa_vechiul_testament.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/jenitibefazezekosuvamudar.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/36687044372.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/gasanalepuruki.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9617/files/template_ieee_transactions_on_power_electronics.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010782.bin
fc8b913404dabeb25ca57d97a89484695b3f09ecad8792aa2052b8d22adf7fa7
pdf-font-stream PDF embedded font (sfnt) at offset 0x10782 5600 bytes
font_01_sfnt_off00011a56.bin
fe55b7b700ddb574e5adb406e67bbbc21336d7c54828d9e4f7897ca3e2c3e52c
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A56 15576 bytes
font_02_sfnt_off00014b19.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x14B19 4324 bytes