Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f58774515275c3…

MALICIOUS

PDF

65.5 KB Created: 2020-08-11 01:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ce8f32eb1856894370fe3ce42d33e2a SHA-1: c838bb81bbf8a81383443c186cf6736bdfc9d930 SHA-256: 35f58774515275c38e4b0238b82d613a82fa63a18d7876ebde2f698e6947c564
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/wb?keyword=skanda%20purana%20in%20kannada%20pdf%20free%20download`. This URL is likely part of a phishing or scam campaign, attempting to trick users into downloading further malware or visiting malicious sites. The document body also contains this URL, reinforcing the malicious intent. Additional unknown URLs were extracted, suggesting a broader distribution network.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wb?keyword=skanda%20purana%20in%20kannada%20pdf%20free%20download
    • http://files.hastingshensel.com/uploads/1/3/1/3/131379256/9851c587c.pdf
    • http://files.burienlittleassembly.org/uploads/1/3/0/9/130969477/416eef3612a.pdf
    • http://witoni.asaanalytics.com/uploads/1/3/1/0/131070374/b72f5f876.pdf
    • http://files.graceandtaylor.com.au/uploads/1/3/1/4/131453111/6076263.pdf
    • http://duboje.bagnallproperties.com/uploads/1/3/0/8/130814328/2286158.pdf
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/28112025159.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/john_deere_f525_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/99110320400.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7464/files/placa_ateroma.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/under_the_canopy_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/my_drive_connect.pdf
    • https://cdn.shopify.com/s/files/1/0437/5927/2090/files/pilubiwikenuvefi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9113/0536/files/birdland_bass_transcription.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/jadoxixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/nilorijinojav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3808/7070/files/siwamofirepokukunuxoketam.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009847.bin
40d335216a9a452b3d70adf4165fef04b924ebc79f438fa345c18580adbbdc04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9847 4920 bytes
font_01_sfnt_off0000a911.bin
988f1e92b05f43ee43a1bac2526555d4206ccb748bbad27176aeb89852f2c5ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA911 3560 bytes
font_02_sfnt_off0000b650.bin
0d0e6226528332cb9798d8d79d185721a8c7bdf58023bc7366e7dcd7c4090bcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB650 11992 bytes
font_03_sfnt_off0000db73.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB73 4324 bytes
font_04_sfnt_off0000e974.bin
6aefe3709f396e6a05164e2a878fa71883c72346cb3d7cb6b160541fc2cfaa08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 3640 bytes

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