Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c97aa8dd896844…

MALICIOUS

PDF

41.8 KB Created: 2020-09-07 22:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fb2b0f5df2a3bbb9d3af8bdcb9af5fe SHA-1: 5b1a5869f0977aa82653cb7e0494836ed7345852 SHA-256: 92c97aa8dd8968447809cb58cef41964e597ee66c635fb97059fcbb543cc9f07
140 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Quickbooks journal entries report' and embeds numerous links. One critical heuristic indicates a malicious redirector link pointing to 'https://ttraff.link/pify?keyword=quickbooks+journal+entries+report'. Another heuristic flags a large number of external PDF links, with the first being 'https://cdn.shopify.com/s/files/1/0431/1734/6965/files/nakixin.pdf'. The presence of a callback phishing lure suggests an attempt to engage the user directly after initial redirection.

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.link/pify?keyword=quickbooks+journal+entries+report
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/nakixin.pdf
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/tugawugidumof.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/fuse_on_93_ls400_location.pdf
    • https://cdn.shopify.com/s/files/1/0432/4658/3976/files/69742392669.pdf
    • https://cdn.shopify.com/s/files/1/0432/1404/5341/files/goldberg_variations_for_string_trio_sheet_music.pdf
    • https://static.usrfiles.com/ugd/bcc0e4_b12aa234f2024f0e97e843b753045a88.pdf
    • https://static.usrfiles.com/ugd/89602e_3bc50370e75b46c69fb440f06467b588.pdf
    • https://static.usrfiles.com/ugd/5926b4_97547a6495294796a18367217346200c.pdf
    • https://cdn.shopify.com/s/files/1/0433/8787/9580/files/2892106341.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/best_reader_windows_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/banasik_pathophysiology_test_bank.pdf
    • https://cdn.shopify.com/s/files/1/0462/5262/1973/files/29533946335.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/fuvenekalarobir.pdf
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/rugako.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/jasosetomuni.pdf
    • https://cdn.shopify.com/s/files/1/0434/8998/4678/files/adobe_acrobat_xi_pro_to_word.pdf
    • https://cdn.shopify.com/s/files/1/0438/3762/0386/files/16876656707.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_off00006557.bin
0da244208ad8f40c7b71747e70a3f9d4f0ffdbd05280472fd1ac8e85f3a151f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6557 5268 bytes
font_01_sfnt_off00007754.bin
417c9f2b5f80709971b2aa21b922dec9c328f9238dd20d1e57e102978c68e6a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7754 10260 bytes