Malicious PDF — malware analysis report

Static analysis result for SHA-256 184343ae9e6c08f4…

MALICIOUS

PDF

44.0 KB Created: 2020-09-01 09:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c96323077194f4ce64090abb59245d9 SHA-1: 96c83909063a2bb07218c06dd556187181676190 SHA-256: 184343ae9e6c08f4efaa9ada24fc02c7156cc7f4069e2fb1c5b30e7123644f80
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body and embedded links suggest a lure related to academic templates, but the primary malicious activity is the redirection to the known bad URL. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm strategy to obscure the ultimate destination.

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/wix?keyword=doctoral+dissertation+word+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/gatiki.pdf
    • https://cdn.shopify.com/s/files/1/0434/6200/0806/files/kewagogetiwofogufo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8620/9443/files/brothers_movie_telugu_movierulz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5381/7749/files/31211220944.pdf
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/17815216661.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/96829993982.pdf
    • https://cdn.shopify.com/s/files/1/0433/9187/7283/files/research_paper_on_systematic_investment_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/gbf_revenant_weapon.pdf
    • https://cdn.shopify.com/s/files/1/0432/8403/7792/files/degrees_of_comparison_worksheet_grade_8.pdf
    • https://cdn.shopify.com/s/files/1/0438/7222/3387/files/algorithme_les_tableaux_exercices_corrigs.pdf
    • https://cdn.shopify.com/s/files/1/0463/7337/2059/files/usb_bluetooth_adapter_for_android_auto.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/97498552201.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/77883220377.pdf
    • https://cdn.shopify.com/s/files/1/0437/4013/5589/files/torodedanogemowugorew.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/tovumotusula.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/modenonibewefokeloruxini.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/91867005904.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058d2.bin
f998cee53b16a52603bee572f8e8c33a5cc33b8d951c674f965fd179f24255e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D2 5308 bytes
font_01_sfnt_off00006ae4.bin
58f3973f87611a0abaf0c281488f4c1794c5d76dd1b9d5d6903dfd4509687be2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE4 10160 bytes
font_02_sfnt_off00008d78.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D78 16204 bytes

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