Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd733dda45647c1…

MALICIOUS

PDF

62.0 KB Created: 2020-07-25 14:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de5b85bff57e21e0342b30ffd03813c7 SHA-1: 97ca17e4ec85acfdaa057d7ae8d48f383fb19836 SHA-256: 0cd733dda45647c191b95d036c40ed23cd1321e1beaaf343c2f79c11d21271f3
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, appears to contain a question related to synonyms, suggesting a social engineering pretext. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm or redirection strategy, likely to distribute further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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.com/pify?keyword=cual+es+el+sinonimo+de+languidez
    • http://files.jtpelectrical.co.uk/uploads/1/3/0/7/130775249/3965359.pdf
    • http://files.theempowermentequation.com/uploads/1/3/0/8/130874566/3779101.pdf
    • http://files.benztransport.com/uploads/1/3/0/7/130775260/batobunan-mafikok-gomaz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/kiranevozurubube.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/24306848795.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/477602459.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/90548116633.pdf
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/35835377016.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/meritopafovabapif.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/ximibefezefi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/seroxuruzupuzoxenumegigod.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/dinutavemufedana.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/junukabubatinumer.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/varabowowuma.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/87496833037.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007509.bin
425a8625a0386676c0604e31ea4cba451bcf1f73715154988654de0905eb7e30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7509 4276 bytes
font_01_sfnt_off0000845c.bin
82cb96cc9982b0d11a1e54df6496a07a1dc029af13e37050be4daf781c48d6f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x845C 4924 bytes
font_02_sfnt_off00009500.bin
b54a39dbf16424a65bf87aecd15fa3222e0d625a8fa9616355af15e4ff056842		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9500 3700 bytes
font_03_sfnt_off0000a320.bin
d86f406440434dd805e4fa2c6fbec406c9dcc9ebd535a5d84d966bee0de88010		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA320 4588 bytes
font_04_sfnt_off0000b201.bin
26febc5facb3e9b864420cd2904a3db4d15da7ba73d7bde90e9fd4de7f9ab83e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB201 12420 bytes
font_05_sfnt_off0000da92.bin
afe0f21424c4ce45a25e6577a9a1a84186f204c1bd7850d0eff252b5e0467f30		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA92 3272 bytes

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