Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa117d632bd4953a…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 09:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6df8fd420d5c93d6550db347c892eec6 SHA-1: 45778e1fb10473d2b12f424f4a04a069c4156d1f SHA-256: aa117d632bd4953acbaaa49f7328cb94a63672b095f870e175046d0e5e7fec36
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing a calendar and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The PDF structure and link farm indicate a social engineering attempt to drive traffic to malicious infrastructure.

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/pify?keyword=mahalaxmi+calendar+september+2020+pdf
    • http://files.earltoddbbq.com/uploads/1/3/0/7/130739651/rawiwemigoput_wavebudox_mujikozomoju.pdf
    • http://files.musicatmainstreet.com/uploads/1/3/0/7/130739839/davetuxu.pdf
    • http://files.nalipops.com/uploads/1/3/0/7/130775712/zafopijom.pdf
    • http://files.lifetimewellnesscenter.org/uploads/1/3/1/3/131379591/xagatedapeluxebom.pdf
    • http://files.truthinsinging.com/uploads/1/3/1/4/131454549/a1115b1427f5a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/58859706550.pdf
    • https://cdn.shopify.com/s/files/1/0434/9915/9718/files/bovada_round_robin.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/82889598932.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24501063531.pdf
    • https://cdn.shopify.com/s/files/1/0449/9626/4094/files/pan_card_date_of_birth_affidavit_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/3279/7603/files/vusotoxige.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/petazefaruwaseves.pdf
    • https://cdn.shopify.com/s/files/1/0431/7747/6260/files/pepukaforoduba.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/pejonefufijegudiliner.pdf
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/33839327123.pdf
    • https://cdn.shopify.com/s/files/1/0435/2779/8943/files/kavufupizapepavugoge.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/argumento_por_analogia.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_off000068ba.bin
39ab4196acbff4e6f763e018dfe533394202cd88572d87e789badf165f81eb52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68BA 5884 bytes
font_01_sfnt_off00007ca1.bin
ae9f30792947bc1d0a9d9369c45651e6b908605deab2470cddfc2aaf6f9f5a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA1 10368 bytes

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