Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b8791d58e8def7…

MALICIOUS

PDF

45.8 KB Created: 2020-08-17 16:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 035eda380c153dd0e6f28a18cafea51f SHA-1: 1b6b7ab71f778b4b62a660a89e269ef9cf33ff81 SHA-256: b7b8791d58e8def75a0b1a2662e82637f6ec0d791a69fb7df9168e84603e229f
128 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, specifically pointing to 'https://ttraff.cc/pify?keyword=filter+excel+data+to+multiple+sheets'. This indicates the document's primary purpose is to redirect users to malicious sites. The presence of a large number of external PDF links, many hosted on various subdomains, further supports a link farm or redirection strategy. Although no scripts were extracted, the document body and heuristics strongly suggest a social engineering attack aimed at redirecting users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=filter+excel+data+to+multiple+sheets
    • http://raguz.backwaterinc.com/uploads/1/3/0/7/130740596/2449393.pdf
    • http://files.replica-eames.co.uk/uploads/1/3/0/7/130739122/jafawudaga.pdf
    • http://files.grandmabeecards.com/uploads/1/3/0/7/130775352/ririgavez_vitato_fofeg_bedanet.pdf
    • http://files.ccfcovid19resources.com/uploads/1/3/0/8/130874369/mokaz.pdf
    • http://files.ghostwrittensomniloquy.com/uploads/1/3/1/4/131438038/roronuxeta.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/double_entry_accounting_system.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2346/files/gafevive.pdf
    • https://cdn.shopify.com/s/files/1/0450/5973/5704/files/description_of_a_person_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/45470548213.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/haunted_chuck_palahniuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/makunaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3139/5478/files/41954056557.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/chinese_ttf_font.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74251218784.pdf
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/jitesoforebafipatoke.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/bimubufixuwodulape.pdf
    • https://cdn.shopify.com/s/files/1/0440/6312/9765/files/74233720873.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
font_00_sfnt_off0000678b.bin
2eb6db69c700ffae74e41da6842be1dd2e46546b487860ee78aa2cd0a28601fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678B 5112 bytes
font_01_sfnt_off000078e9.bin
d80890984c76287cacf439c3059785318d60a72c604a93844754064bc7f8759d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E9 10296 bytes
font_02_sfnt_off00009bf9.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF9 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.