Malicious PDF — malware analysis report

Static analysis result for SHA-256 653edd233a14093f…

MALICIOUS

PDF

49.3 KB Created: 2020-07-28 20:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 778341631f0312ee1a1096800c050eac SHA-1: bd5cdda2dfd8c60fc0b7136502c313fb28829944 SHA-256: 653edd233a14093fdbb2ab7c802e1fb72cbf33a98d8661d46a68bd6ea8df6b2c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL associated with a redirector. The document body, though heavily obfuscated, suggests a lure related to an 'affidavit of loss id template'. The presence of numerous external PDF links further indicates an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

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=affidavit+of+loss+id+template
    • http://files.laurabrayresearch.org/uploads/1/3/1/0/131070230/fd16daa5ad5.pdf
    • http://files.jeebdesignfishers.com/uploads/1/3/0/7/130775987/puwafej.pdf
    • http://files.detailersdirect.co.uk/uploads/1/3/1/3/131380767/1359545.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/58017697418.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/koribowaguzipemesebi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0372/2398/files/wivonelinujevopodozu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/13932775200.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/85182592922.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/dudibaduxidonof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/66335112233.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/xukazifarujibasovugele.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/26645584032.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8823/files/sifowazen.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_off000084e1.bin
ec26523c12993e78968d4f8825a2e5896f9ab0bcafb7e69f93f8429995366e75
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E1 4820 bytes
font_01_sfnt_off00009555.bin
76a2e8a4fab3ee9fa738b3f3e88ad0a41fadfa5b67a1e1f8107de28be5b240f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9555 10172 bytes