Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32e6151bac96834…

MALICIOUS

PDF

40.5 KB Created: 2020-09-02 10:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e30e572cddbb126a51b5fc72ba05175e SHA-1: 428a40bb335132d42d3423bce3e372f231e79d72 SHA-256: a32e6151bac9683477829446ac8fd8fd0ab1edbcc72c8916b32f9ed463d2200f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a regulatory compliance policy template. The document also functions as a link farm, directing users to numerous other PDFs hosted on Shopify. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or redirection attempt to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=regulatory+compliance+policy+template+guide
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/64403807468.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/89126370328.pdf
    • https://cdn.shopify.com/s/files/1/0440/7905/5000/files/flower_names_and_pictures_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/77124749418.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/wifi_power_saving_mode.pdf
    • https://static.usrfiles.com/ugd/64d889_651d52b7af5944e0a9e24e12a4270ae7.pdf
    • https://static.usrfiles.com/ugd/b916f4_244d5084f95d4c85b63d59fe9162add2.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_b2a35628b2e24da387c5a72532ddcd56.pdf
    • https://static.usrfiles.com/ugd/13ae68_0988a041bfe54a6ba2fb54972c82004d.pdf
    • https://cdn.shopify.com/s/files/1/0461/9154/2423/files/54096215553.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/brain_on_fire_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8833/8330/files/nasun.pdf
    • https://cdn.shopify.com/s/files/1/0430/0531/3177/files/masione_mouse_driver.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4981/files/34588916334.pdf
    • https://static.usrfiles.com/ugd/d8e941_f79efed86d5544ffa6746a3e8b094d89.pdf
    • https://static.usrfiles.com/ugd/cafc24_a8d4e537f04b4f369b73ae9709192ed4.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_off00006217.bin
965a800cef85e0d33caf1ac0bd83963d4ce140e708584b9d6e4d91ffc939bac0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 5324 bytes
font_01_sfnt_off0000742d.bin
511c20a5e3bacdb3003db3976f8d36e0ca22e26cbad0b2e95b0f36a32c49a485
pdf-font-stream PDF embedded font (sfnt) at offset 0x742D 9688 bytes