Malicious PDF — malware analysis report

Static analysis result for SHA-256 1136c7f9d9199717…

MALICIOUS

PDF

74.6 KB Created: 2020-08-07 03:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c02d3c6fd70187af3e342a50f7c15aed SHA-1: 409f389604efc46c142cf641db237675091a723f SHA-256: 1136c7f9d9199717430639b9899cdf23e7b82afe318bbc9d04ec0094f121acde
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to malicious sites or phishing pages. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external PDF links, suggesting an attempt to manipulate search engine results or distribute content, potentially malicious. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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=tatuajes+carcelarios+pdf
    • http://files.creativejuicesboosted.com/uploads/1/3/1/6/131636725/nanuke.pdf
    • http://files.nanni.info/uploads/1/3/1/6/131607075/mafitibobutolonefepa.pdf
    • http://files.gthsptsa.org/uploads/1/3/1/8/131871705/tipuk.pdf
    • http://files.transactionbankingacademy.com/uploads/1/3/1/6/131607075/9288390.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7791/7085/files/arquitectura_barroca.pdf
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/getovolami.pdf
    • https://cdn.shopify.com/s/files/1/0439/2157/2008/files/sociology_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/how_to_disable_graphics_card.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/82786482354.pdf
    • https://cdn.shopify.com/s/files/1/0440/6103/2598/files/tisunajatodedujosokugad.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9283/files/geriligutuzifaji.pdf
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/48977426269.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/69241817764.pdf
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/mysql_stored_procedure_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/ducky_one_keyboard.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1456/files/articles_exercises_with_answers_for_grade_4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd32.bin
8578a1936be6043447c5022ee3fe233da035cc24528a9c2b475dec22fd2a318c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD32 5172 bytes
font_01_sfnt_off0000dedd.bin
da39ad19005e54041ed754fdcead0382b902f773b6eba9490bb49b0c84096ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDD 11532 bytes
font_02_sfnt_off000104d4.bin
39e0fbcf4bc96c42d707e35b59ad745620ad6aa71dbc7cc7fc7ff09a5c9f49c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 16512 bytes

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