Malicious PDF — malware analysis report

Static analysis result for SHA-256 fafcf5fda01b574c…

MALICIOUS

PDF

39.0 KB Created: 2020-08-30 15:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 689cbcd8afd0c46a6c5a6af37cd10455 SHA-1: 439e2e70fd9dcc506a703b4e50576073408a5b1e SHA-256: fafcf5fda01b574c53cba385993635a6f0a78ff056b4c2e17d512e9a99231cab
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this PDF is designed as a link farm, likely to direct users to malicious content or phishing sites. The presence of a quiz lure in the document body further supports a social engineering attack pattern.

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.ru/wix?keyword=dork+diaries+7+quiz
    • https://dorkdiaries.com/wp-content/uploads/2019/12/Secret-Santa-Quiz-Song.mp3
    • https://static.usrfiles.com/ugd/ac51ce_5c44228c16d5452fa05b645328e1c162.pdf
    • https://static.usrfiles.com/ugd/b8c837_f4afea57049f47549d6eebe7b958a90e.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_dcccb6cdaff04fe8ac0f15cbb8d9ad6e.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/paxoneruwexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/animal_alphabet_letters.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/simple_budget_forms.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/11067213652.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/11807381106.pdf
    • https://static.usrfiles.com/ugd/b7ab08_85f9b763343345998da82b636433218d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e1e97d7380f4a078b6681330c3be851.pdf
    • https://static.usrfiles.com/ugd/269bb8_17739e36758445c9bf756400c380699f.pdf
    • https://static.usrfiles.com/ugd/b8c837_15f326ea0ada4b75873805b2b7f733ef.pdf
    • https://static.usrfiles.com/ugd/5a1791_77895c23b5c64899902196f50afa62d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3d687b5d7ae40128abf4b0f83952d37.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_off000045ee.bin
bf55bff8dbd7ae82f53702d74393ab1333b9ce7bb447ea1d77f393360810ea43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45EE 5108 bytes
font_01_sfnt_off00005771.bin
ae59c0e21ae9dab899a5591b3ab75778a79bbfc829978c15f55f550114656fe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5771 9884 bytes
font_02_sfnt_off0000794a.bin
4954ddec54c61b6acc7eddbac306bc890d05f3afdfcf3ae890c7612da0a7d668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x794A 16376 bytes

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