Malicious PDF — malware analysis report

Static analysis result for SHA-256 676033de8db5b42a…

MALICIOUS

PDF

54.8 KB Created: 2020-07-24 10:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 324e049531c801f5ad00050c5a756068 SHA-1: a43db24e62b1ca10bdb7e0754219baba4a53ac05 SHA-256: 676033de8db5b42a3baf6be8bce8a1955a4ae80e5abe7cd72af16018a090e782
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. It also exhibits a PDF link farm heuristic, with numerous external PDF links hosted on Shopify. The document body, though heavily obfuscated, contains text related to iPhone SIM and APN settings, suggesting a lure for technical support or phishing. The ML classifier strongly supports the malicious verdict.

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=au+iphone+sim+android+apn
    • http://files.fixerinturkey.com/uploads/1/3/1/8/131872017/pumonebafewoniwabepi.pdf
    • http://files.richmondgardenclub.ca/uploads/1/3/0/9/130969535/7678206.pdf
    • http://files.henhousepublishing.com/uploads/1/3/1/6/131606060/e9d647cd8c7b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1018/5637/files/69307172239.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6675/files/lutetufivekiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/tisowusunoxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/85229209712.pdf
    • https://cdn.shopify.com/s/files/1/0439/7580/3038/files/jatamorefo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/mutikofozaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/40823920251.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/jatewezolifet.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/67444756878.pdf
    • https://cdn.shopify.com/s/files/1/0431/0364/9954/files/90922453593.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088a8.bin
cc0088b7a9d4f7b23ec724d31b04ab433d88d7a6b52ffe5b766e0574d5fa4c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88A8 3304 bytes
font_01_sfnt_off0000947b.bin
c4d691922c2b5d5e0f81365759a5f1b5981c46b555624e50f32048b6121af149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x947B 4956 bytes
font_02_sfnt_off0000a50d.bin
588a3fd0037cc5c480b554cfd2452ff5c8da2fe184e5855ea951c0572fe33f00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA50D 12448 bytes

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