Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd628a6730d0208e…

MALICIOUS

PDF

44.2 KB Created: 2020-08-31 11:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 745bd9cdcc6280832d9d63cdffcbc97c SHA-1: 47ec09d15bb55d5d63a94cb91d412485e9691bea SHA-256: fd628a6730d0208ee2fb7e3c74e10f6ade13f8184621df99f7f408120adce917
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is further supported by the presence of a "download button" lure in the document body. The primary malicious URL identified is https://ttraff.link/wix?keyword=printable+border+stencil+templates. The document also contains a large number of links to benign Shopify PDFs, likely for SEO manipulation to increase visibility.

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.link/wix?keyword=printable+border+stencil+templates
    • https://cdn.shopify.com/s/files/1/0430/8575/8618/files/77090758347.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4485/files/77119273241.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/receptor_agonista_y_antagonista.pdf
    • https://cdn.shopify.com/s/files/1/0430/5528/4373/files/91815053358.pdf
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/gegabukekekimimunibepa.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/gejakutabujo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/bostitch_air_staple_gun_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0755/7283/files/broderie_diamant_grand_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/7291/3557/files/algorithm_and_flowchart_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/best_free_movies_sites_for_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4854/files/acog_preeclampsia_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/lilly_singh_bawse_book.pdf
    • https://cdn.shopify.com/s/files/1/0450/5387/0232/files/napoleon_bonaparte_free_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_c16e7e82a8a5471ca89954a7bc6e9b93.pdf
    • https://static.usrfiles.com/ugd/15cd4d_f01b1eca5a054bc59fc3cdbcb8612d42.pdf
    • https://static.usrfiles.com/ugd/b8c837_195e06c7da894170a91d6081932901e9.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_86bd3b476ea14b3daf775816cd3492a8.pdf
    • https://static.usrfiles.com/ugd/9734e7_0a83072a1970408fb228bef636df041a.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_off00006e4a.bin
36459af3961c58c93fa01fef03f26dbc1166dcd252f99dc5aed7ba7fe9dad755
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4A 5360 bytes
font_01_sfnt_off00008059.bin
30d603fa1f78bc964ca8a75d166bc84c036969cb18a128927dc71907b6feca9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8059 10128 bytes