Malicious PDF — malware analysis report

Static analysis result for SHA-256 683093f59250feeb…

MALICIOUS

PDF

51.1 KB Created: 2020-08-06 22:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf491a30440fefb4c1da5fef181e240f SHA-1: 39ed7c55cd98d765690063d431490a3dd267fe26 SHA-256: 683093f59250feeb8eabd80d21197f5691b739819885efdce4d35c6f2abd87ad
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'news paper pdf' and includes the malicious URL. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links points to a link farm or redirection scheme.

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=andhra+jyothi+news+paper+pdf
    • http://files.childsupportreformnow.com/uploads/1/3/2/6/132682826/molededorote.pdf
    • http://doven.aspectsofdance.ca/uploads/1/3/1/8/131856772/xebosabisutisixuta.pdf
    • http://files.murrayvilleanimalhospital.ca/uploads/1/3/2/6/132682802/wobilojuxotiperavap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/43952991742.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/74024090539.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/jutumavomifevibunesawo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/fuwixuwomilokokamomedasa.pdf
    • https://cdn.shopify.com/s/files/1/0436/7931/8166/files/anamika_academy_maths.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/kigow.pdf
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/papotov.pdf
    • https://cdn.shopify.com/s/files/1/0431/6194/4228/files/50835326039.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/85833406859.pdf
    • https://cdn.shopify.com/s/files/1/0436/1011/2163/files/keresaselojab.pdf
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/joraboxibisat.pdf
    • https://cdn.shopify.com/s/files/1/0435/3402/4855/files/mysql_update_join.pdf
    • https://cdn.shopify.com/s/files/1/0432/4504/3880/files/gafovejuzofizofiruvu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/32346021360.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089ae.bin
ba92ffa884ba8371cf06e2f64739573bf345f485d5b60197c7cc7f24a8bd3397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89AE 5356 bytes
font_01_sfnt_off00009bfa.bin
cb730461f3caaa987f29831b2d039d045cce8391c3198efd9c12f34cb5440e0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFA 10288 bytes

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