Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c8ee2dd2f0f6da…

MALICIOUS

PDF

38.1 KB Created: 2020-08-11 22:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a527a7d554fb978e26c98d3e2a62ef92 SHA-1: a05983ad05ba8429b0c23f007dc56575488e00f4 SHA-256: d7c8ee2dd2f0f6da6158e08de023da1c456d63804c28a19bf94753b4c500235c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link that points to a URL designed to lure users with a keyword search. The document body, though heavily obfuscated, contains the target URL and appears to be a lure for a newspaper PDF. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=today+dinamalar+newspaper+tamil+pdf
    • http://files.nashvilleucc.org/uploads/1/3/0/7/130775063/b1087e3bb8c7.pdf
    • http://fugixoxir.saltwaterandseaglass.com/uploads/1/3/0/9/130969723/78ca46e775c.pdf
    • http://files.mtolivetofperry.org/uploads/1/3/1/8/131871621/4f8f684f94.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/8851313102.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/bobusududilefubo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/divumekumumazefita.pdf
    • https://cdn.shopify.com/s/files/1/0428/4681/4374/files/49501711147.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6971/files/62911005588.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/92139430552.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/redabil.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/15508457085.pdf
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/vepotenexupakulebunu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2102/3904/files/git_discard_changes.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/83767706366.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/zujewumove.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/tarit.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/funiw.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056f1.bin
ea234aeba1441edf23d7332122df48e0e588882d39d9e4bf7dfeaaf1c99aac29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F1 5332 bytes
font_01_sfnt_off00006917.bin
ad196d50fc419c89e5957155a3370b8a1345c0f72f8a0ab04383da80047e21b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6917 10036 bytes

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