Malicious PDF — malware analysis report

Static analysis result for SHA-256 e739ab99abe354ca…

MALICIOUS

PDF

43.6 KB Created: 2020-08-22 18:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e80586ffb0f54c7d7641108aa1c787eb SHA-1: f2c7f2cde26f9350eda76669e62e064ea6e6398f SHA-256: e739ab99abe354caee98d3aa32f50336331a96771481c2b95147a8825103d861
130 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one identified as a malicious redirector. The document body text, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=bookmark+indesign+template, which is flagged as malicious. This suggests the document's primary purpose is to trick the user into clicking the link, likely leading to a further malicious download or exploit. The presence of a visual download button heuristic reinforces this social engineering tactic.

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.cc/pify?keyword=bookmark+indesign+template
    • http://files.mounthelenacounseling.com/uploads/1/3/1/4/131483219/f3badb79261.pdf
    • https://cdn.shopify.com/s/files/1/0429/0206/1215/files/cursive_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0463/1878/0578/files/zetovibisar.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/varicocele_tratamiento_medico.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/durenixatox.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/cookiezi_new_skin.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5034/files/55265784510.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/affective_domain_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/1775/7095/files/coldplay_yellow_tab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdf
    • https://cdn.shopify.com/s/files/1/0458/0130/8326/files/90317452656.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/34153045391.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/pilate_power_gym_plus.pdf
    • https://cdn.shopify.com/s/files/1/0459/6219/9200/files/hd_images_for_pc.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_off00006ca2.bin
759e06a735842cf160e21f4b1b6988a48a11ca25fbcc6169a2e1e759d34005ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA2 5392 bytes
font_01_sfnt_off00007edd.bin
21b743e82856d42a414d38536bbff5fed00f70e721c9014382659995293ab6c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDD 10180 bytes