Malicious PDF — malware analysis report

Static analysis result for SHA-256 826c44c657733998…

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 19:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae8e7630a305d32c537de0c895bba30b SHA-1: 48ce54ad20ae448d646ba991b9e119d6eaf127a7 SHA-256: 826c44c6577339981f0b12601f2ee672c163b2940c2eb6c4868815c027574e79
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body contains garbled text but includes the malicious URL, suggesting an attempt to disguise or obfuscate the malicious intent. The presence of numerous external links, including one identified as a malicious redirector, strongly suggests a phishing or redirection attack.

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=seventeen+members+2017
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/38901984387.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/padma_vibhushan_award_winners_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/3823761139.pdf
    • https://static.usrfiles.com/ugd/b8c837_91d4867ac1f04469b83472b97fd8454e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dc96796af0d4b2895c31bd864571d53.pdf
    • https://static.usrfiles.com/ugd/b58d21_2093446742b847779c0d1579eb9ae23e.pdf
    • https://static.usrfiles.com/ugd/9c0842_13b199aac4ce43429b41e27d49cdffc8.pdf
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/bhagavad_gita_in_english_with_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0437/7912/9501/files/zidasifozudemato.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/jawexuxafufexob.pdf
    • https://static.usrfiles.com/ugd/7ef0dc_5da4bdafe7384c539939ca65a795edfb.pdf
    • https://static.usrfiles.com/ugd/b8c837_afa0cb97b4bf4762a3dc610c60ba0793.pdf
    • https://static.usrfiles.com/ugd/362633_e732384e1059477fb303203dbac69f3a.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060bc.bin
69f8472ff731aaafedd532d653a0128789d949a0ae9adbcb4406dd32eca343af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BC 3476 bytes
font_01_sfnt_off00006d47.bin
1d950e8a515d83ba992353bfd0628ad18bc17f3fa62a0c96193a73a5a963aed0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D47 5296 bytes
font_02_sfnt_off00007f4e.bin
07d560de58925d2c48aa65c689bb6d2dec40d5f2b03def1f30f2e24508c2585f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4E 10316 bytes

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