Malicious PDF — malware analysis report

Static analysis result for SHA-256 d078eacc312712d2…

MALICIOUS

PDF

56.1 KB Created: 2020-08-16 15:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b80fad20d05d50ff9c1bb988fb19f383 SHA-1: 4fe27f19ff3042daf190b995007dd12742938b06 SHA-256: d078eacc312712d284e5357328e0e4af1ed0c82992865f26582177db94ce31ad
150 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to a 'London theatre guide'. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning tactic. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a further stage of the attack.

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=london+theatre+guide+may+2019
    • http://files.daisiesandchalk.com/uploads/1/3/0/8/130813710/888d3f9a75e6aa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/vegan_baby_food_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/4643/6006/files/43202632396.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1344/files/que_es_la_elastina.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/kipabupolalajizuzafutiluw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/bali_map_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/oxford_dictionary_and_thesaurus_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/sanaxabefutelodojotes.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/angular_2_form_dirty_touched.pdf
    • https://cdn.shopify.com/s/files/1/0438/7323/9195/files/introduction_search_engine_optimization.pdf
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/wordpress_comments_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/shingeki_no_kyojin_ova.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0188/files/18184371871.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009062.bin
7d776d954f7992f0572bb5b5772f7d35f8f3d1df8a205f397c1741da18f97505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9062 5436 bytes
font_01_sfnt_off0000a2b9.bin
a3b7d6663343a2fec18378621ad6484cb6a7a3f1130b9da124791fb3fb8d9062		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B9 10120 bytes
font_02_sfnt_off0000c556.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC556 4324 bytes

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