Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b53aae8e0514a31…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 17:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c65cf6643284c9dc8cfd987646b7e2d SHA-1: 33960b198b2a5d645361f23c85b88f2d09796db6 SHA-256: 4b53aae8e0514a31297973495bd5757ce6dbd1a3a9f4568e38d44597d7748487
160 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'company balance sheet' and includes numerous links, with one pointing to a known malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests an advance-fee fraud attempt. The presence of a malicious redirector link indicates a likely attempt to lead the user to a malicious site or download.

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.ru/pify?keyword=reading+company+balance+sheet
    • http://metiluf.hearthtarot.com/uploads/1/3/1/4/131407089/763c264.pdf
    • http://files.lajarraranch.com/uploads/1/3/2/8/132814097/62b07039240.pdf
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/58674371441.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/bubble_shooter_3_game_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0436/1617/4237/files/wii_u_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/zexese.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4132/files/bediduwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/6483957772.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/google_docs_viewer.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/xajobadukomu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/31628599834.pdf
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/vumiwuxanuw.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_off000066b6.bin
85bd654d5a13700d4a8eb16fa83d62cc8783526b950a9a6c577fe034e247d01b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B6 5640 bytes
font_01_sfnt_off000079c7.bin
a0e0fb4a7079e6647f46a28222e0185e8852778199eaa63c283eb27fd403ff3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C7 10428 bytes

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