Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb538b9b94558e5c…

MALICIOUS

PDF

34.2 KB Created: 2020-08-09 19:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bacf275edccfdf64e3a4e248ff4ed13 SHA-1: df1a90f3ca027bdecf04d1469d10a2091cebadd5 SHA-256: bb538b9b94558e5cd1bffbc36ca07a952d8685ffad3472903d0e572d387dd186
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a redirector service. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=tableau+section+armatures+ha+pdf'. This suggests the document is designed to lure users to malicious sites, likely for phishing or distributing further malware. No scripts were extracted, and the document body was heavily obfuscated.

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=tableau+section+armatures+ha+pdf
    • http://files.thisisgonnahurtdnd.com/uploads/1/3/0/7/130739298/474fe.pdf
    • http://files.omahabeadaffair.com/uploads/1/3/1/3/131378993/04696.pdf
    • http://files.airychimes.com/uploads/1/3/1/8/131857199/3135806.pdf
    • https://cdn.shopify.com/s/files/1/0432/4160/3239/files/ncert_maths_books_for_class_6.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/pixanuvaxek.pdf
    • https://cdn.shopify.com/s/files/1/0438/0655/6322/files/audio_playing_through_mic.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/regression_analysis_articles.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/35138949940.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/27796364937.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/sophas_transcript_request_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/0277/3156/files/74849791046.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/zijulit.pdf
    • https://cdn.shopify.com/s/files/1/0430/0429/7375/files/zepawekanawuvobuti.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7556/files/heavy_d_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/78080740426.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/82886958546.pdf
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/menusatuwutibu.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_off00004913.bin
a19fced70ec583c4b6dd3bfdce5b46c9428591a2b93874f9e7c64f836744dd9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4913 5484 bytes
font_01_sfnt_off00005b85.bin
769724680fe6076722c03eaf9384b89ff20197bd0c8be7ef72172da032b7c8b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B85 9412 bytes

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