Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ddfd01bf5e1095…

MALICIOUS

PDF

47.3 KB Created: 2020-09-05 17:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3884456303bf3596a2340d1ecc63169f SHA-1: d559f456de9174b6eb0a924949a97c155494f531 SHA-256: e0ddfd01bf5e10959016cf42bccf938624f45578a73bb2df5c53d8548e9ade98
152 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting it is a 'walkthrough guide' for a game, likely a lure to entice users to click the malicious link. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO poisoning or distributing malicious content.

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.me/wix?keyword=dragon%2527+s+dogma+dark+arisen+walkthrough+guide
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/fenijijigoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/36280636693.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/miwosinemamaxumojeteti.pdf
    • https://cdn.shopify.com/s/files/1/0434/0308/3928/files/42151392196.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/8954314602.pdf
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/93754460503.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9426/files/xamitewonubevuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/8135/8753/files/waltz_in_a_minor_chopin.pdf
    • https://cdn.shopify.com/s/files/1/0440/2121/9493/files/99550843722.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/48520230475.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/torajadapafawomaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/2975/8103/files/free_sheet_music_creator.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/fuxibupavemotupejeweb.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/78741450242.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_off0000789a.bin
1a331ebd81b879ec73dcba442f4a7b12cbf7182074b94068f354e1c2683689a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x789A 5428 bytes
font_01_sfnt_off00008b01.bin
7196495660bffdc8e69f6befd558b9e612aaae7e0e709d146a6ef59ad2252308
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B01 11032 bytes