Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92b424002b7ac3b…

MALICIOUS

PDF

63.5 KB Created: 2020-08-15 10:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a87792b14f5757520133582c75df618 SHA-1: 0526c34cba1edb90ea5d765147919ab926160109 SHA-256: c92b424002b7ac3bf3f6e8e4b50e2efd46a94b24f1ed77a9a70b8ee60a48dd07
120 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which, https://ttraff.cc/wb?keyword=ayat%20kursi%20dan%20terjemahan%20pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'Ayat kursi' and 'terjemahan pdf', suggesting a lure to disguise the malicious intent. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm strategy to obscure the primary malicious destination. No scripts were extracted, limiting the analysis of further execution chains.

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/wb?keyword=ayat%20kursi%20dan%20terjemahan%20pdf
    • http://files.buckskinrevolution.com/uploads/1/3/1/6/131606347/e37fdd9c195b.pdf
    • http://befides.stevedurow.com/uploads/1/3/1/8/131856772/6662329.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/89552867480.pdf
    • https://cdn.shopify.com/s/files/1/0440/1129/0782/files/getuparerexepiwimu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/kubigenekutixagafevipe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6904/6935/files/3800_series_3_engine_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/xafowurixuwabas.pdf
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/examples_of_gram_positive_and_gram_negative_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/bold_discord_text.pdf
    • https://cdn.shopify.com/s/files/1/0438/5092/4182/files/drdo_ceptam_syllabus_for_physics.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/the_calligraphy_bible.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_off0000c169.bin
649df85bed3ce7a8403c84f3a6c9f5bec8325cb4c2660290f4dc27b5a2ce7dfa		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC169 27328 bytes
font_00_sfnt_off00008b6a.bin
e69d2557b1b3b52acd3144a5bf1e24cb5399dceb8dcdc0b81a52fd5d1c32bc2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6A 5480 bytes
font_01_sfnt_off00009df5.bin
c965ce103c7f4c23c000d61fd6acf9666df8b7b8c48626a659e33d99ec921123		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF5 10360 bytes

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