Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5831c4f90929f59…

MALICIOUS

PDF

118.9 KB Created: 2020-08-25 06:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7d599a9b40a108813b7fc82555ec1d1 SHA-1: 0f4ea7ae19e1c1934c2197fbd7c80c08f17ed0ce SHA-256: b5831c4f90929f590f2b4021be87e94483313599ae6d4fe9e204263d71933e87
160 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating a malicious redirector link and a link farm, alongside an advance-fee scam lure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware delivery.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=lagu+bts+fake+love+versi+piano
    • http://files.mosaicsyourway.com/uploads/1/3/1/8/131871535/297367.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/jipofedupasasafogofejava.pdf
    • https://cdn.shopify.com/s/files/1/0439/6512/0670/files/cbse_biology_textbook_for_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/pojeke.pdf
    • https://cdn.shopify.com/s/files/1/0428/2292/6492/files/sawelugufesetevol.pdf
    • https://cdn.shopify.com/s/files/1/0462/0088/1315/files/50_sheets_of_paper_crossword_clue.pdf
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/lateberudi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/73072988773.pdf
    • https://cdn.shopify.com/s/files/1/0449/5418/9983/files/86283577021.pdf
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/meditation_now_a_beginner_s_guide.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
stream_004_off00010fdf.bin
fc161210152e57ea2476e1393d266380be63207acf066dcf22356d2db793ff4e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10FDF 39556 bytes
font_01_sfnt_off000185e5.bin
25ab49f04c00defef9f7f03de93a3c7578a18bdb63563a8fa97d62510c2b9be7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x185E5 5276 bytes
font_02_sfnt_off000197ef.bin
8222c1a8d5a80ea32c70eb9a473366fffd7ce0c6324e14a76b2fba74782370d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x197EF 17712 bytes

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