Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdafbae96c33f19c…

MALICIOUS

PDF

60.0 KB Created: 2020-08-28 01:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0195534921dcac6857cecf09adc65a3 SHA-1: 0c8338b811da12e7e0be25940ba7bb5c4aadfac1 SHA-256: cdafbae96c33f19c6ad0e6913829d0166e17bcf8db9d6882059f0a4ab071f10b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a PDF link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of many external PDF links, including benign ones from Shopify, indicates a link farm strategy to obscure the malicious destination.

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.com/pify?keyword=eichmann+in+jerusalem+epub
    • http://pepego.petithappy.ca/uploads/1/3/1/4/131407406/logebogosuto_petirinu_xomaminozizuzi_pasixebanukumo.pdf
    • http://ladeko.biz-skills.com/uploads/1/3/1/4/131406676/xobenudexobefupure.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/18852042762.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/3248408810.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/sahih_bukhari_hadith_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0465/0139/6638/files/2051218929.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/82021330244.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0023/files/wasteland_survival_guide_fallout_4.pdf
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/ccna_icnd1_and_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/jiraworebuza.pdf
    • https://cdn.shopify.com/s/files/1/0429/5586/6265/files/27927989477.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008adb.bin
41bbad670f7868a4c660e58003e1e892885fc92832f1897bd6e6ca6546eedbb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADB 5348 bytes
font_01_sfnt_off00009ccc.bin
2d1419103f7baca24c443a0fa032df32a06c37f6d2dc492a48115ae64bf378fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCC 2576 bytes
font_02_sfnt_off0000a689.bin
6fbfb6f4fa4264e2fd17b87443f6587dd8ace395ab93439023f16d955bef2a6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA689 11224 bytes
font_03_sfnt_off0000cb43.bin
6f05fcc33dc372c65fe8ed4596c490c1c5fa3e30d289e41d945a04c13f239fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB43 16780 bytes

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