Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d6f00c4f0d260f…

MALICIOUS

PDF

46.8 KB Created: 2020-08-07 16:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb81a0f44cb1e9689db8a5dc2b7fdbf0 SHA-1: 6f6f65f61a97e71953af4faa62d76110bc27f791 SHA-256: 21d6f00c4f0d260fafe7dd6a303c5620b8c5ff42def2f8daef26bfd1ecd67617
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL, https://ttraff.cc/pify?keyword=blood+type+diet+book+pdf, is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains the lure text 'Blood type diet book pdf' and the malicious URL, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=blood+type+diet+book+pdf
    • http://files.megaplot.org/uploads/1/3/0/7/130776164/cd265925f.pdf
    • http://wozasafod.modernhomebuyers.us/uploads/1/3/2/6/132682076/6052651.pdf
    • http://files.healthnotwealth.co.uk/uploads/1/3/0/8/130874495/8ea4984.pdf
    • http://files.lvrdance.com/uploads/1/3/1/6/131637135/2205898.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/tijugegatabowu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4204/6103/files/jopifopalopenoro.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/gezixawira.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6335/files/foxoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/46468047643.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/babanalaxinorolotuneja.pdf
    • https://cdn.shopify.com/s/files/1/0431/2147/5738/files/gawunotixigapomofekofev.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5743/files/sotawodutezarifowowires.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/rafufuxofokubadilulag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tukesameb.pdf
    • https://cdn.shopify.com/s/files/1/0433/5665/1669/files/romorubuxitukuru.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/manual_concrete_block_making_machine_design.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_off00007883.bin
bed4b9734cd6b6ee06db8e46964e4edad3086630c7f635caf4dc60a95b8544d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7883 4904 bytes
font_01_sfnt_off00008959.bin
d306ab17869c21818aa24b23d1ac83f751c736f469b8be97420424687d918b54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8959 10796 bytes

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