Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2cea92bab9504d…

MALICIOUS

PDF

43.9 KB Created: 2020-08-21 09:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0cae034d078c7287a94577c376bdda3 SHA-1: ca4529c3ecd89e2b6ea6203198f9337d684d6afd SHA-256: 0c2cea92bab9504d1248d692f58eb2c9351c9abb011f7e5fe29b3eddbb6c9148
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=bticino+x8000w+manuale+installazione`. The document body, though heavily obfuscated, contains similar URLs and appears to be designed as a lure, possibly for phishing or to download further malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports 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=bticino+x8000w+manuale+installazione
    • http://direlig.hilltopct.com/uploads/1/3/0/7/130775735/615071a6510.pdf
    • http://kewavilus.corpseapple.com/uploads/1/3/2/6/132681231/8748786.pdf
    • http://disulom.ourfamilyunion.com/uploads/1/3/0/7/130775195/2b043ddb1c.pdf
    • http://files.todyeforcosmetics.com/uploads/1/3/2/6/132681501/navelubinekatix.pdf
    • http://pesanafe.wildwoodacres.com/uploads/1/3/1/8/131872303/xaremowog.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8233/3851/files/jeporatekerij.pdf
    • https://cdn.shopify.com/s/files/1/0434/0052/8033/files/kabidabegumipisidivarisu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/sybcom_advertising_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/6948648863.pdf
    • https://cdn.shopify.com/s/files/1/0438/1828/7266/files/brickell_key_court_reporting_naples.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/23537476986.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7211/files/99877242780.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/82441162573.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/rotolunetojade.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_off00006dbf.bin
16854659f8d6280d8c226b03a450a2c1c114a8dc7ecb1b7acc4ef12e95cc58e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBF 5444 bytes
font_01_sfnt_off00008048.bin
2ef510c34883faec2ac62a8181747881eb311a881ed99ea830faac693511e850
pdf-font-stream PDF embedded font (sfnt) at offset 0x8048 10052 bytes