Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2229900f6496d2e…

MALICIOUS

PDF

35.6 KB Created: 2020-08-31 11:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc42595d325418adbb14916e63236df5 SHA-1: 2a72d6cee701ae6de169c5219ee7ffaa0500b4bf SHA-256: c2229900f6496d2ea59b685fe4de0e05e9bdfd9efb09d2ff080a311b375192bc
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.me'. This URL is embedded within the document body, disguised as a book title, suggesting a social engineering lure. The presence of a large number of other PDF links, many hosted on Shopify, further indicates a link farm strategy, likely to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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.me/wix?keyword=scrum+the+art+of+doing+twice+the+work+in+half+the+time+mobi
    • https://cdn.shopify.com/s/files/1/0433/1077/6484/files/sovenagan.pdf
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/tenalilenoruxijiri.pdf
    • https://cdn.shopify.com/s/files/1/0435/3880/8991/files/video_twitter_dms.pdf
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/36353396276.pdf
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/10794097900.pdf
    • https://cdn.shopify.com/s/files/1/0430/1894/4665/files/gosemevedawesavi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5465/2821/files/cambridge_ielts_6_listening_test_4_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/98253338695.pdf
    • https://static.usrfiles.com/ugd/b9801a_a0b09953912949e3a3dc24b2c27af5c3.pdf
    • https://static.usrfiles.com/ugd/b88e3d_ba1bc61829a04b4896d366500c0a75b8.pdf
    • https://static.usrfiles.com/ugd/b65acf_51d2e99d31ba4d83b0fa1309e6cf5d92.pdf
    • https://static.usrfiles.com/ugd/ea2f88_e7ec647037fd4235871dec95ded0b94c.pdf
    • https://cdn.shopify.com/s/files/1/0438/7602/4475/files/kozumovafozedivelekosedu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/96028227845.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_off00004ae6.bin
073f9d81651759daa2125fe954eefe9d10c8b1d4592dd6f3f8396256d933f62e
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE6 5656 bytes
font_01_sfnt_off00005e0b.bin
6e9a41f38fc12bea72d6f6a0505d1642555289396949ebd1dd834806ac4972ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0B 10344 bytes