Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad17b333580f9d68…

MALICIOUS

PDF

42.5 KB Created: 2020-08-22 16:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b76911322bffbe8402112255c3e1a0c SHA-1: a9f84a9f1fa7943d0d3b59d419389597c6c7846b SHA-256: ad17b333580f9d6825a1a93e2ecd084ad2f898cbcb9abba3c2cb07b0d96fa51d
130 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with a critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=bugdom+2++mac'. This suggests the document is designed to lead users to malicious sites. The presence of a visual download button further supports a lure-based attack. No scripts were extracted from this sample.

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.ru/pify?keyword=bugdom+2++mac
    • http://files.americanfriendsofthefatherbashfoundation.org/uploads/1/3/0/9/130969220/xudalar.pdf
    • http://files.nysdivorce.com/uploads/1/3/1/6/131637257/wipapunesawodi_sadafopuwunupex_dajibedupir_jaraboj.pdf
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/roremoxinuruboxek.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7039/files/74996676707.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/38519191787.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/adsorption_process_in_wastewater_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/pedagogy_of_the_oppressed_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/47617191732.pdf
    • https://cdn.shopify.com/s/files/1/0437/8607/6309/files/lafikeneket.pdf
    • https://cdn.shopify.com/s/files/1/0434/0160/9366/files/nidalofibe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/55346641364.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_off00005ba4.bin
3121aead0302ad5b82e253727cf8543e6956bb5982eb9a5a91eb7af302b4b7c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA4 4664 bytes
font_01_sfnt_off00006b72.bin
ece3b0721750aa6c7af22d42fcd57444e21476252c14852cd3164b17ae494754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B72 10608 bytes
font_02_sfnt_off00008fcd.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCD 4324 bytes

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