Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd20cd429525793…

MALICIOUS

PDF

39.3 KB Created: 2020-09-02 03:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4162bd12d1dfebcec2bed589e289e239 SHA-1: 9048fb8b80c2c360314255113c1eff706c881bd6 SHA-256: 7dd20cd429525793a7e99f722c787c45f1c91ba1d6957d6176427323849c8acf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=drf+clocker+report', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a phishing or scam attempt. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a malicious intent to redirect the user to harmful content.

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/pify?keyword=drf+clocker+report
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/alimentos_transgenicos_historia.pdf
    • https://cdn.shopify.com/s/files/1/0435/3658/0759/files/36373233474.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/58670380217.pdf
    • https://static.usrfiles.com/ugd/04c368_1998445a06104831bab1067b26edbb72.pdf
    • https://static.usrfiles.com/ugd/b8c837_c720883fa70a4b16aa28daeb13e60fa9.pdf
    • https://static.usrfiles.com/ugd/158fb9_b218527202a241c083cc9533ca128a20.pdf
    • https://static.usrfiles.com/ugd/b8c837_8298f1fa6bdb441c93f0ece271c65248.pdf
    • https://static.usrfiles.com/ugd/82d61e_5dad5c4f599d4d2bbfe3feb5445e4f38.pdf
    • https://static.usrfiles.com/ugd/fafc38_861d1d411f044b378246b08bc27e30de.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/79898269840.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/95180824383.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/gativup.pdf
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/lugekimobidij.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/frontier_airlines_gate_information.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_off00005020.bin
8b340ee0c5b52df810b47fd7fa3f89cdc174104c24dadd837d05b0072a05f672		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5020 4320 bytes
font_01_sfnt_off00005ee2.bin
39a7186e751ef619bd7fde2efee646364992a41b8768062944b3e9cb8fba6475		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE2 10396 bytes
font_02_sfnt_off0000827c.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x827C 4324 bytes

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