Malicious PDF — malware analysis report

Static analysis result for SHA-256 555418ace1c34c51…

MALICIOUS

PDF

49.5 KB Created: 2020-08-07 01:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44fb95daf0c80b33a1d3e5e127fb7783 SHA-1: 84f78acb4c6455693b7d61854287f1016fdfc515 SHA-256: 555418ace1c34c5128d2448bafd5bf41bf4d35e5e621fa0d548f98f29bb53ce0
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.ru'. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution. The document body text, though heavily obfuscated, contains the same lure as the redirector URL, reinforcing the social engineering aspect.

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=digital+electronics+notes+pdf+download
    • http://files.janeantonovich.com/uploads/1/3/0/9/130969298/ff7733de4db0.pdf
    • http://ziramij.hannamonsterly.com/uploads/1/3/0/9/130969352/3032395.pdf
    • http://files.performingartsworkshops.org/uploads/1/3/1/3/131384777/zejapepuzufozodipa.pdf
    • http://zigedugu.227photo.com/uploads/1/3/1/4/131453541/wavulunakoxigifomud.pdf
    • http://files.makingbristolbetter.com/uploads/1/3/1/6/131606228/sajexoxopavasaw_terepoduwod_davimo_vunogunujobemox.pdf
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0430/8133/4951/files/audre_lorde_the_master_s_tools.pdf
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/lefabujuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/motorboating_merit_badge_pamphlet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/31485361509.pdf
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/colloquial_arabic_of_the_gulf_and_saudi_arabia.pdf
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/wujevopifolimewefusizevek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70339383958.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/rixisezawaverapajuwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/93237596332.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9814/files/africa_geographical_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/haldol_gotas_bula.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/78510508902.pdf
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/26299147220.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_off00006acc.bin
0ff19073ed1e80cf10fc213e6fb8c8084c2d2b691d8ced37e5407f98f764b23a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACC 5416 bytes
font_01_sfnt_off00007d5b.bin
2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5B 2116 bytes
font_02_sfnt_off00008727.bin
8f4448efde304b4b4f0e3b9e208bb440072d1f898d1e6a1b4c9942b8d267e907
pdf-font-stream PDF embedded font (sfnt) at offset 0x8727 15188 bytes