Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb459b9ec68ef12…

MALICIOUS

PDF

69.7 KB Created: 2020-08-07 01:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c9f4e99511476ad7fe7dd1077fa9e9e SHA-1: 35b07620f5c79ff2a819cd88172cd595ffaed4d2 SHA-256: ccb459b9ec68ef1265aa4b2f40473909b368f47c8d6eb3b645ce6f0e72fecc59
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=belajar+bahasa+arab+sehari+hari+pdf`. The document body, though partially corrupted, contains text related to 'Belajar bahasa arab sehari hari pdf' and the malicious URL, suggesting a lure. The PDF also exhibits a link farm behavior, with numerous external links, many hosted on `cdn.shopify.com`, though some are marked as benign. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=belajar+bahasa+arab+sehari+hari+pdf
    • http://files.devereuxazevents.org/uploads/1/3/1/1/131163643/1af510cdac3b33e.pdf
    • http://files.heels2wheels.tv/uploads/1/3/0/7/130776499/07810b2.pdf
    • http://files.soulfitt.com/uploads/1/3/1/4/131453623/41a122503b.pdf
    • http://files.freeclinicsv.com/uploads/1/3/2/6/132682790/dekejuribawazik-dozidama.pdf
    • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/estado_acido_base.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/el_budismo_tibetano_esencial.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/80418012130.pdf
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/66746527472.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/gikegilenamedomoled.pdf
    • https://cdn.shopify.com/s/files/1/0427/6187/9719/files/fojorijewe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/brunner_and_suddarth_s_textbook_of_medical_surgical_nursing_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/nesemen.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/77498337204.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_005_off0000d05c.bin
2fc75b733424652e010391c0f64fbdfa2a7addba1ab8a1f90ca7fcfb8ba7ca0a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD05C 32668 bytes
font_00_sfnt_off00009134.bin
537cfa8c8a56c5f139516e93f67112e1aa43f267daa6f0d26680428ed87a3b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9134 5396 bytes
font_01_sfnt_off0000a382.bin
c3d03c0ef9975bb5d409278f07e9e558ebfe455b937fb73c8aaa40b2f0155c28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA382 14300 bytes

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