Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec35de0e0cd10e1…

MALICIOUS

PDF

41.0 KB Created: 2020-08-04 14:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83ed52cc388dbbe1ee25dc96e11a17d3 SHA-1: 95dc801878bb26b31b954d8c1ce047804f52f554 SHA-256: 3ec35de0e0cd10e1161c3222d77aa69d0529202d1dd5e52f696ebabd8356e876
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for 'Mah cet 2020 result pdf download'. The link leads to 'https://ttraff.com/pify?keyword=mah+cet+2020+result+pdf+download', which is known malicious infrastructure. The document also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The presence of a visual download button further supports the lure.

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.com/pify?keyword=mah+cet+2020+result+pdf+download
    • http://files.thecottagebaker.net/uploads/1/3/2/6/132681976/lifarunanesunepojego.pdf
    • http://files.ojaidigestivehealth.com/uploads/1/3/0/8/130814644/wamesokin.pdf
    • http://files.sukooncoffeeicecream.com/uploads/1/3/2/6/132696113/zulujilol-fegamimu-vojozosumis.pdf
    • http://files.wellspringky.com/uploads/1/3/1/3/131398145/4999286.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/91010717127.pdf
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/notedemovusopelopo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/70786873551.pdf
    • https://cdn.shopify.com/s/files/1/0438/0701/5069/files/bexexalukisagav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/bugeriduvatab.pdf
    • https://cdn.shopify.com/s/files/1/0435/7950/6847/files/47977441683.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/can_you_be_banned_from_discord.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/barabasi_albert_laszlo_a_kepler.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/xatemitatuvomodekor.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_off00006154.bin
286f9b8647afc24c5f0180c90789fbe21c424bbb17508cd5ea7dcfbf7ca336fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6154 5616 bytes
font_01_sfnt_off00007492.bin
ca26b975e63ad8f6d466eaf2f48b0c172bd6ce51306503478c38038986d8fd0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7492 10136 bytes