Malicious PDF — malware analysis report

Static analysis result for SHA-256 007cd279632a6864…

MALICIOUS

PDF

78.9 KB Created: 2020-09-12 01:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa426ea34122f39bcd571bfaf9bd155b SHA-1: 3628c627bdeb3a8135ebf0ba71c4283f72ccdada SHA-256: 007cd279632a6864ecd55dc528cd63c3b6022f03908cb21929d97c79675db186
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Bliss OS for PC', suggesting a lure to download potentially malicious software. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning and driving traffic to malicious sites.

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=bliss+os++for+pc+32+bit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0460/0853/3151/files/santhosh_subramaniam_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0464/0587/7915/files/muguboweg.pdf
    • https://cdn.shopify.com/s/files/1/0432/6798/1474/files/ukp_akreditasi_puskesmas.pdf
    • https://static.usrfiles.com/ugd/87d215_f49d8e7991f845759fb052312b67b7e5.pdf
    • https://static.usrfiles.com/ugd/1ee69b_033392c0f58642bfba376666652c7309.pdf
    • https://static.usrfiles.com/ugd/b8c837_28410656406e4946852adc44fe522506.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8720849d8cc43cc9628223bf32455db.pdf
    • https://static.usrfiles.com/ugd/e56fe2_837f71c8288c41b6964b2168480d9fb0.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/free_evite_invitation_templates.pdf
    • https://cdn.shopify.com/s/files/1/0432/8239/9390/files/cccp_codec_pack_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/jilenekisegatopitirezexa.pdf
    • https://cdn.shopify.com/s/files/1/0449/6316/8415/files/simple_bookkeeping_template_uk.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbac.bin
c21fb3766ae2a7698a5e95ba3761283a5c1f919e20d94cc64a1255b4c8f15e19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAC 3340 bytes
font_01_sfnt_off0000d7b6.bin
217d8ff8155cb2c3164b8cf94585ea093cf4f655f74f62baaedcac0a1e2caf17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B6 5284 bytes
font_02_sfnt_off0000e9c5.bin
4b4220a872460e1664d66a8c1eba82e65b7f6702cab628b5f6aa33457ef5931e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C5 14976 bytes
font_03_sfnt_off00011863.bin
e66abfbeddc1d19d92dcb25e98d0a5acfcfed5afa902c0cdbe1883ebc60d8997		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11863 16392 bytes

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