Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e497beeb6284c4…

MALICIOUS

PDF

51.5 KB Created: 2020-08-30 22:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7d6becbf1a26ffc15cd7c2a69f27ebc SHA-1: db485978b8d8b2d944fb7b77551d9d257acbe206 SHA-256: 92e497beeb6284c4f17b168acbb37d07206718d6c5f15df5d019e4c08345d679
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a reference to 'world is not enough lyrics', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The primary malicious URL is likely used to redirect the user to a site hosting malware or a phishing page.

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.cc/wix?keyword=world+is+not+enough+lyrics
    • https://cdn.shopify.com/s/files/1/0431/3799/0813/files/3468123896.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/jugagurezenejavorinaj.pdf
    • https://cdn.shopify.com/s/files/1/0465/9521/1429/files/teacher_guidelines_maths.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/70042918878.pdf
    • https://static.usrfiles.com/ugd/09273f_0807aa5e27214421a3a754b6b234e240.pdf
    • https://static.usrfiles.com/ugd/b8c837_fda6dc78d40043f6abcadc51081db8d6.pdf
    • https://static.usrfiles.com/ugd/0789d5_857198ed4dca4f47bc5b50d4ec144900.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a1f5c131d9f4c5cbc50b2a8917f02dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_84be0dd07e9441c8ba4c6d17d03b8329.pdf
    • https://static.usrfiles.com/ugd/b8c837_79db1b3cedb34562867ac8531568f8aa.pdf
    • https://static.usrfiles.com/ugd/5ecadc_7de760a0fc2a480aa5a5e581609a5451.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3439/files/agriculture_supervisor_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/8115/3177/files/23155244691.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a472.bin
4e1c13048aaa01774d9ad4484a1d4f539c756585de783e6d5a69ad2339a36781		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA472 18552 bytes
font_00_sfnt_off00006c8f.bin
353d81691d19f9bd40a989ab34168ecbf1dfc49f83f697bac46deb114fdc0822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8F 5108 bytes
font_01_sfnt_off00007dfd.bin
7de1f1cbb6f38ad5911712ba7d64ebdf8db97aa01b64650bfc84e5a911a885bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFD 11672 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.