Malicious PDF — malware analysis report

Static analysis result for SHA-256 5100442415ce2ccf…

MALICIOUS

PDF

40.5 KB Created: 2020-09-06 11:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36fe5d841bcde154b1fe6b5e8bd6c007 SHA-1: c0155c7c4321e74cb7ca1b05ae859425e037d88b SHA-256: 5100442415ce2ccf9e06a0a63e0a601f335e70e17e46fe1b08064f6b7da17444
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'weight control feeding guide' and includes the malicious URL. This indicates a social engineering attempt to direct the user to a harmful 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.club/wix?keyword=earthborn+weight+control+feeding+guide
    • https://static.usrfiles.com/ugd/d43733_647947239a694f1b901a8c88ffb85f39.pdf
    • https://static.usrfiles.com/ugd/544e7e_cc6419017a9a4fa18d0a20888fe485c8.pdf
    • https://static.usrfiles.com/ugd/c0a468_0fedb1cb53624acc8aee5e17beee60be.pdf
    • https://static.usrfiles.com/ugd/b73feb_94effe6628944f3bbf00808a05687b4a.pdf
    • https://static.usrfiles.com/ugd/804ff6_2fc5ef01556a464a821950a2e4787e4d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f98fac90fa214322abfe941517a167fb.pdf
    • https://static.usrfiles.com/ugd/ca300b_a6b3a7b450624eb79665a4b6a129b577.pdf
    • https://static.usrfiles.com/ugd/29c71c_f44b47311620406e99cde9dfaa5c4ec9.pdf
    • https://static.usrfiles.com/ugd/f0b6b3_625c75a6e1e14389989ec0a207281da2.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/raropijamani.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/22766084646.pdf
    • https://cdn.shopify.com/s/files/1/0438/0239/4786/files/54404740956.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0881/files/58609083883.pdf
    • https://static.usrfiles.com/ugd/451a43_6ac3361f43c94679a168285937162823.pdf
    • https://static.usrfiles.com/ugd/6116da_76c148858f2a4b399cfdeaf5c2d08a2f.pdf
    • https://static.usrfiles.com/ugd/71fd01_6f52fb65793f4633b4e722070a9c6ac8.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fa9c06a96f2433387519dec2ec6ac9e.pdf
    • https://static.usrfiles.com/ugd/8b2c09_e3060ff31879410ab6aba0d93599d8ce.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_off0000606f.bin
db895563eaf533adb1ca9c3977a3f15deceff73c6cd06e1f44132977a1c0de19
pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 5296 bytes
font_01_sfnt_off00007284.bin
4f82b2e8427c0d202c5721cd61e864edf5ea0af008d32b9d5c7a5791dbfc1839
pdf-font-stream PDF embedded font (sfnt) at offset 0x7284 10064 bytes