Malicious PDF — malware analysis report

Static analysis result for SHA-256 762eff56e700d8b7…

MALICIOUS

PDF

48.1 KB Created: 2020-08-31 11:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37bbe1a1659b5a4337e94046fe7ab1e3 SHA-1: 65aa913d69ba05ab340195a7fb95c41c5cbe6c9a SHA-256: 762eff56e700d8b711924ab73906a3dbe90cce31b82fd097f827de91c8948c59
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=1.8+shaders+mod+indir'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier strongly supports the malicious verdict.

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.ru/wix?keyword=1.8+shaders+mod+indir
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/0a51c1_d68f570aaf214a52868464b15cd7cfe9.pdf
    • https://static.usrfiles.com/ugd/40b9e6_7f87f09fd050474d8a62b76bf385e1cf.pdf
    • https://static.usrfiles.com/ugd/8cbfce_c6f16c43f2c049eb83656dab946cad0a.pdf
    • https://static.usrfiles.com/ugd/6cf392_aae7f39118dc44d6a6e58a11c977b182.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0328a08538c460e8b0451d8c349ddf8.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/kefukagemiwemividina.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/ledanebuzapativo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/64608254964.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/armiger_warglaives_rules.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/tujotedenudu.pdf
    • https://static.usrfiles.com/ugd/74a852_237834da57424c88be39a23ed6cadae1.pdf
    • https://static.usrfiles.com/ugd/b8c837_83b9462286874da28ee99fd604e281d4.pdf
    • https://static.usrfiles.com/ugd/430cb2_200fca50305b4bb78cd073dfed3d2989.pdf
    • https://static.usrfiles.com/ugd/5360f8_546285a45f1f45e9a7dab126569a7dd0.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_off00005ce0.bin
162592034c09ccea1b4440abe2a8b3d265bb4f8c919d1e6114b36d03831c0a78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE0 4924 bytes
font_01_sfnt_off00006d62.bin
524c65fbda32885951fe4f0de1769f16bae15c917bcfe28b005a5230cae37117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D62 10304 bytes
font_02_sfnt_off000090cc.bin
f7fb55aa7df24da556f1e6a14ff3e973b5c7274e6851c040e899454d18355684		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90CC 16064 bytes
font_03_sfnt_off0000a560.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA560 4324 bytes

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