Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e106987a48b62ff…

MALICIOUS

PDF

44.2 KB Created: 2020-08-24 01:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d305006ef597a09c7aa82e48682ffa5c SHA-1: 0c760d1d5668aee72115405bb7a8afb0dae713af SHA-256: 4e106987a48b62ff1f7cd41cb80bb8b1d43d63aa9bba1dbc53e30f6fc1b731cd
140 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.cc', identified as a malicious redirector, disguised with text related to 'ACCA exam structure'. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The presence of a callback lure suggests a potential phishing or tech-support scam pretext. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=acca+exam+structure+pdf
    • http://files.halseyband.com/uploads/1/3/2/8/132815123/negirumigafurezupabi.pdf
    • http://vokuman.birgitbaader.com/uploads/1/3/1/3/131380729/sutelabuju.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/hosts_file_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/steam_slow_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/40053574663.pdf
    • https://cdn.shopify.com/s/files/1/0435/8720/7331/files/tavoloderumog.pdf
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/jakavevekit.pdf
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/virofuxexuvuxuvu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8569/9997/files/autocad_14_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/pevomuvubimidifududemalun.pdf
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/latefobelape.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/minecraft_cracked_1._5_2_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/6907723895.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/standard_definition_tv.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_off00006f07.bin
d16db0de1885e64b0ecd9ddf6bfc6cf51551775a0fb0973908c014b13410029f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F07 5324 bytes
font_01_sfnt_off0000810d.bin
1125df2c36c3314b6a606d34c53bdcec77362cd746ff4054ee393e6e5b373afd
pdf-font-stream PDF embedded font (sfnt) at offset 0x810D 10308 bytes