Malicious PDF — malware analysis report

Static analysis result for SHA-256 c162fb256947157b…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 04:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a17001d8a912a4306e1761499ce81e1e SHA-1: ed19f93fa61369a1431ce0377154c1a197698184 SHA-256: c162fb256947157b61d90ce9a116d0d848837d59a142de5e96b5c2e7e67a598d
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=adobe+flash+serial+number'. This URL is designed to lure users into clicking, likely to a site that attempts to exploit them or deliver further malware. The PDF also contains a large number of external links, characteristic of SEO poisoning or link farm tactics, further supporting a malicious intent.

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=adobe+flash+serial+number
    • https://static.usrfiles.com/ugd/d01287_562198edd95e4144bb930bec968e9c9f.pdf
    • https://static.usrfiles.com/ugd/b8c837_912569e4c4bb43e8b098a71aeca5d8d9.pdf
    • https://static.usrfiles.com/ugd/07625c_a1cbc231d0f640869f74fa9e5024d1df.pdf
    • https://static.usrfiles.com/ugd/e4bc37_e371584bc17544ca811bdb84fb4d24a1.pdf
    • https://static.usrfiles.com/ugd/bdeb4c_9e6c620fecbd41c2a928ef2536c150dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_cdc77f2aa0844d95be48d2cfbe874bbd.pdf
    • https://cdn.shopify.com/s/files/1/0437/7831/0306/files/ABDde_yaplan_kenevir_ayakkablar.pdf
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/vedivavijefovoluboxudita.pdf
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/jizafasufolifozapabub.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/kupiwuzidewolowus.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/mosudotafofif.pdf
    • https://cdn.shopify.com/s/files/1/0433/4737/8344/files/reporting_binomial_test_apa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/58853156977.pdf
    • https://cdn.shopify.com/s/files/1/0464/1715/0120/files/misivit.pdf
    • https://cdn.shopify.com/s/files/1/0435/4513/3215/files/arupu_audio_song_free.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_off00006615.bin
e69e50d5fe2a9492a8cf9091154d1140f230e9647bd729724bb42e4c3b5c172f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6615 5276 bytes
font_01_sfnt_off000077d1.bin
0e58064a5063c70591ce69cf33aa0b63ac2a8543881fbf815008c4f03e36ac6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 10124 bytes

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