Malicious PDF — malware analysis report

Static analysis result for SHA-256 088b013e426c3b0f…

MALICIOUS

PDF

44.3 KB Created: 2020-08-23 07:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 283a7ba93fada87c9bc13d3233befb05 SHA-1: 5bee3d57aaf12c606b9c0f7909a763cada7d560f SHA-256: 088b013e426c3b0f9d46d21448fb9572c436e79eb0086709b72cd1d358f7b525
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the redirector URL, suggesting an attempt to disguise the malicious destination. The presence of numerous links, including those to Shopify, indicates a link farm designed to attract traffic or distribute payloads.

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=servicenow+knowledge+base+article+template
    • http://sotemo.villaserenacabo.net/uploads/1/3/1/4/131454265/fawokufiririp-nuzusezulatimel-toxeloxuramufib.pdf
    • http://wilibu.baleupfeeders.com/uploads/1/3/1/3/131398097/pakika.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/jinizudifafevonafin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89120683065.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3537/files/tubuh_batuan_beku.pdf
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/pdf_split_mac_os_x.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/rivak.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/ruzujisala.pdf
    • https://cdn.shopify.com/s/files/1/0429/4213/6476/files/morphology_and_anatomy_of_cockroach_class_11.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/top_faction_servers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/advantages_of_lifi_technology.pdf
    • https://cdn.shopify.com/s/files/1/0432/1404/5341/files/13980900155.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3469/files/94334639878.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/florida_construction_law_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/kasewewuzepelexe.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_off00006b96.bin
a936770428ed8558a0fdf683a3700f4db31a46ddfc9982eec63515cccb7e2f01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B96 5852 bytes
font_01_sfnt_off00007f7d.bin
b8854e927992b9b964f1b89d9cba63a66a53374fb027bba0c06b4e3f907c749b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7D 10628 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.