Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b64b888afde9b05…

MALICIOUS

PDF

69.6 KB Created: 2020-08-06 13:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96da116b3ffed6aa85a0b4aae7b9c672 SHA-1: 2082adf106af990a03525969af0d1c2697751682 SHA-256: 6b64b888afde9b056f4343834670c4452e236dd96cd9595093cc6a9cbbb020fe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though partially obfuscated, contains keywords related to English grammar for children and a URL that aligns with the malicious redirector. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware distribution.

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=gramatyka+angielska+dla+dzieci+pdf+chomikuj
    • http://files.australiaunitedplatform.com/uploads/1/3/1/4/131409009/6505871.pdf
    • http://files.elisabethkwak.com/uploads/1/3/1/4/131454172/binuda_xenawibefupo_pafuneko_mikuduvizi.pdf
    • http://files.platinumdancecompany.com/uploads/1/3/0/7/130739393/3236644.pdf
    • http://files.artbylatiolais.com/uploads/1/3/0/7/130740051/2d9e023a5d8ed55.pdf
    • http://files.orchardvalleyhoa.org/uploads/1/3/2/8/132814272/1326067.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zawitowawipujeko.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/xatofaxukogavepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/52405608720.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/kedijulabasupediguketaguf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dekafarisajanitid.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/fititotokezemu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5135/files/29416365017.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/97462386348.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/26876935140.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/22834399388.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/14954140593.pdf
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/10560938876.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_off0000cb63.bin
23721650ae0c06d7fefd9e55e9047ac91d0714b14a2bfbcf186f9a646c4bb627		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB63 5892 bytes
font_01_sfnt_off0000df64.bin
d3cf7066cf651deebeae390483d9383624f76012aa9a50578593d613817e985e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF64 12884 bytes

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