Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb5b676594e99ff…

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 23:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d237c911f9bc99f6e05dd34f7b205da6 SHA-1: eb1c9fdbd3119658bf50b47eb91cfba081c2745e SHA-256: 6cb5b676594e99fffa158bc370f2f882adb5cd02c884596346447ecea1896b63
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, including a critical redirector link to 'ttraff.com' disguised as a free Myers-Briggs test. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm heuristic further indicates a malicious intent to distribute content or traffic. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful 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.com/pify?keyword=myers+briggs+test+pdf+free
    • http://files.stmarkscocoa.org/uploads/1/3/1/4/131408170/zogipavoworire.pdf
    • http://files.totalvolumeagency.com/uploads/1/3/1/4/131437307/mevasusop.pdf
    • http://files.nlrtsa.co.uk/uploads/1/3/1/4/131406108/5961061.pdf
    • http://files.rebeccagrahamgallery.com/uploads/1/3/1/6/131637570/rosowewaxikegul_fimer_tasosi.pdf
    • http://files.cliftscovemadison.com/uploads/1/3/1/4/131437474/kewurosubix.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/98940072733.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/pathfinder_wonderous_items.pdf
    • https://cdn.shopify.com/s/files/1/0436/8862/4283/files/zokisomavaju.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1085/files/synaptic_transmission_process.pdf
    • https://cdn.shopify.com/s/files/1/0433/7087/2995/files/dodupulutujiwodijuwevaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/vomowelavudonis.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/64598735507.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/puxosop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/88277437195.pdf
    • https://cdn.shopify.com/s/files/1/0437/6520/3093/files/kwick_way_loader.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/lemifuxizanafagatanid.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/jovuluj.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_off0000634d.bin
82f635bd4429f3ee44a84d27547f13ac5f16a32e2bfbc89220b95c2f9a190d6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634D 4788 bytes
font_01_sfnt_off000073ad.bin
090b0bbe0c7d1161fd1226cd3a4513813da49332f68699681a4156aa2d4d9f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73AD 9924 bytes
font_02_sfnt_off0000959f.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x959F 4324 bytes

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