Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fb67011f341c87…

MALICIOUS

PDF

45.3 KB Created: 2020-08-29 19:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a06b4c294fce2b3d24be6576ef8f0396 SHA-1: cf27883d8972c90b33a17d3b677eb9b9376acc35 SHA-256: 54fb67011f341c87de43cda6c051e27ac2ee50dddc74915cb498d5547e9e5717
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=ios+soft+dev+pack+++jb+ios+7.1+downl'. This URL is presented in the document body, suggesting a lure for users to download potentially malicious content. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, which is flagged as a link farm. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=ios+soft+dev+pack+++jb+ios+7.1+downl
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/the_misfortunes_of_virtue.pdf
    • https://cdn.shopify.com/s/files/1/0441/0900/4952/files/lufitumiridivabizikavid.pdf
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/hidamari_ga_kikoeru_scan.pdf
    • https://cdn.shopify.com/s/files/1/0448/4349/9677/files/auckland_downtown_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/14576526440.pdf
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/jimuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5004/files/git_diff_single_file.pdf
    • https://cdn.shopify.com/s/files/1/0462/6769/5255/files/free_book_learning_python.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/vobusuvutonelefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/10286695069.pdf
    • https://static.usrfiles.com/ugd/71fd01_c7e0c0969a2c437e9852390ba2720276.pdf
    • https://static.usrfiles.com/ugd/ea78e0_08902737da274593be2d4ec2b2535bed.pdf
    • https://static.usrfiles.com/ugd/b8c837_87867f904f92416a971679d2d6c552c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_59b09932d81247ee9886183dbe279cfc.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/tuwewojile.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/95459975286.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
font_00_sfnt_off0000590e.bin
8ed2e55e72f7f44300256984330bc486f27d78cc472ab49b6f59f549d8d732c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x590E 3336 bytes
font_01_sfnt_off000064f2.bin
9ec98107d2981cc0444091302e194da4957dae9d8dcf18ddb3c804a162875945
pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 5584 bytes
font_02_sfnt_off0000782f.bin
3692923521d1e8b199be0487386c29ae6f8e8efc2b09abd26b5e8c5a618683ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x782F 15408 bytes