Malicious PDF — malware analysis report

Static analysis result for SHA-256 502f679c13a912d1…

MALICIOUS

PDF

44.5 KB Created: 2020-08-31 08:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da8582d820b1768ac4ea9513facbc4a1 SHA-1: 08e3c5252b15cf0cfe737ecc9c5ff4004af0e789 SHA-256: 502f679c13a912d1d78456fd218f55b51aff215473fd692142ff4ba18c157104
140 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body also contains text suggesting a callback phishing or tech-support scam, further supporting the malicious intent.

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/wix?keyword=olympic+peninsula+steelhead+guides
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/jawipikaroxuvix.pdf
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/ropejoxamerumijedipinif.pdf
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/pikufurugazutob.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/and_install_appium_in_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/6451256121.pdf
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/siwagufaba.pdf
    • https://cdn.shopify.com/s/files/1/0440/3838/9925/files/expanding_tactics_for_listening_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/ziwef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0681/1550/files/9807827310.pdf
    • https://cdn.shopify.com/s/files/1/0461/7161/9491/files/apgar_score_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/70498911983.pdf
    • https://cdn.shopify.com/s/files/1/0439/4690/1672/files/kusokutuvixumovibax.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/34179156886.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3593/files/rusijobalibamivometopag.pdf
    • https://static.usrfiles.com/ugd/97493d_e5174b5e05f74796ac1e278a113ad1b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_102fd65e56ab4c76b67f2895b60e47d0.pdf
    • https://static.usrfiles.com/ugd/3ce946_22b3852b61a64271aeb187e7817f50c7.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_off00006d5c.bin
b712f411c9946975c12ce82972d3a5a79329b9a6bcd35d01e549e6ae367b6610
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5C 5520 bytes
font_01_sfnt_off00008000.bin
5f547be60038e8123b1ce9261a4a26df98ed9b4ef2c335ec2f7e482451e7bf30
pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 10740 bytes