Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4d7f97b6e0dd456…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 08:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 886e1160c4b4cfb45fab7736ae80a7d0 SHA-1: 3263b8d5e559c6240c229ef293083fa150e2aa76 SHA-256: f4d7f97b6e0dd456f2aabe103a6a5de5023620bb009ff98481682ab000d9877e
120 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, pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com. The embedded document body text also contains the malicious URL, suggesting an attempt to lure users into clicking it. The primary intent appears to be redirecting users 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.ru/pify?keyword=english+spanish+medical+words+and+phrases+pdf
    • http://files.dabbleabout.com/uploads/1/3/0/7/130738639/0ee7b22a09a221.pdf
    • http://files.mountainbikeashburton.co.nz/uploads/1/3/2/3/132302716/kopakoxuwu.pdf
    • http://jupeza.benningtonsepc.com/uploads/1/3/1/3/131378950/pogoropusa_susajosijekuto_sebulumajelomo.pdf
    • http://files.angeliquestrausheimdesigns.com/uploads/1/3/1/3/131380292/pegebexurasozubavuj.pdf
    • http://files.wszio.org/uploads/1/3/1/3/131379510/861617.pdf
    • https://cdn.shopify.com/s/files/1/0432/7371/5880/files/xetawobokejopubiradugibu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/gisuzulun.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/xemukatewetub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/50412187074.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/27691610646.pdf
    • https://cdn.shopify.com/s/files/1/0428/8898/6783/files/rapefeba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9764/files/kixurovawixuxati.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/45479380024.pdf
    • https://cdn.shopify.com/s/files/1/0429/3420/6620/files/kisuzelog.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/68506128404.pdf
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/5th_edition_d_d_monster_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0930/9854/files/gabifamidovakasu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9578/5621/files/walelobizavofax.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_off00006ff6.bin
d4fd17e8571fa52c180c8aef294b914b1a421265e12552192350bed87ca078ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 5620 bytes
font_01_sfnt_off000082fe.bin
fad6eb5ee2b73e7d5e4687b4f85f40b0a21f9fad3aa3bfd966e2d3c560ffeb80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82FE 10304 bytes

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