Malicious PDF — malware analysis report

Static analysis result for SHA-256 15bf7ca2d6702d49…

MALICIOUS

PDF

48.1 KB Created: 2020-08-26 14:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba7b6bd78a5c331f7df8b6bd075c46f9 SHA-1: 681ef12e0b38420aadb8ada1620b5870efe2dcf1 SHA-256: 15bf7ca2d6702d49af441bfa476f3bbc742274586594aff1b481356d5fd6b5dc
154 Risk Score

Malware Insights

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

The PDF document contains a lure disguised as a "Borderlands configuration tool" and embeds a large number of links. One of these links, https://ttraff.com/pify?keyword=borderlands+configuration+tool, is identified as a known malicious redirector. The presence of numerous links, including benign ones, suggests an attempt to obscure the malicious destination and potentially leverage SEO tactics. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attack, likely initiated via spearphishing attachment.

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/pify?keyword=borderlands+configuration+tool
    • http://files.kitchenpsycho.com/uploads/1/3/0/8/130874257/nabas-mozidijeguleru-labopewow-livuruwilejuxow.pdf
    • http://files.themeditationpeople.com/uploads/1/3/1/3/131398246/9068154.pdf
    • http://wukowofuz.athensprep.org/uploads/1/3/1/3/131383664/xemaxa.pdf
    • http://figim.starmembership.org/uploads/1/3/1/4/131437689/tejozujajeb-kunodavumumo-kakakib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4041/5644/files/sbi_online_challan_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/6575/3241/files/adjectives_exercises_for_class_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/davunaxejapezuxipuwuwozom.pdf
    • https://cdn.shopify.com/s/files/1/0436/3727/6825/files/aluminized_steel_sheet_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0434/5623/3638/files/ncert_books_class_6_maths.pdf
    • https://cdn.shopify.com/s/files/1/0428/9213/2508/files/rotevawefifixokugugo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/22284032087.pdf
    • https://cdn.shopify.com/s/files/1/0428/5267/9836/files/86445486883.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/fish_tycoon_2_magic_fish.pdf
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/lojamubetateretixadomejax.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/23054164919.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000794d.bin
fe2b64f6b90695e8bca47287b969a7288355a8112803f570b6e2d503db968f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x794D 5240 bytes
font_01_sfnt_off00008b29.bin
b3928c3cdd769d92c21c2151c637bde6c932a6afedca6aa2c59d7c4bdeca1220		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B29 12660 bytes

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