Malicious PDF — malware analysis report

Static analysis result for SHA-256 1382113c2ea42a08…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 05:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3733679ff0aa761e2634d6cdc77be82 SHA-1: 3adba2133903b65db2eb9170da9df9282b6f012a SHA-256: 1382113c2ea42a08494dfd1783c710a158f403d92154fd59ef8c840bea823a85
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to a URL designed to trick users into downloading an application. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the presence of a malicious redirector and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful 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.cc/wix?keyword=download+nitro+tv+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/45431541569.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/40275494680.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/32465970334.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/92621389867.pdf
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/athlean_x_workout_plan_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/9113/0536/files/birdland_bass_transcription.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/lutulubamonovedu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9973/files/dojozowabapabusenajuze.pdf
    • https://static.usrfiles.com/ugd/b8c837_077801986ce341a8858c1d3b0c43f43f.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e2cb3b5b63e4742ab0fab769c7a8d8c.pdf
    • https://static.usrfiles.com/ugd/3b7182_5ad8016d15c14ce592e15618029ae8d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb823b2bf3bf42fab79ae2377cbac88d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8543f49da794d3c97b79c8ee397ac57.pdf
    • https://static.usrfiles.com/ugd/3e87bf_3b3d76a2f2f742399ac999b5fa516520.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006204.bin
5b26c742ed8e6567e6c076c952be6bd573651f5687a585d1a39231c717106571		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6204 4992 bytes
font_01_sfnt_off00007321.bin
a1c68180eae955d710b1f59d89b7b5bb1f22246194deffa7b9c3298859733f9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7321 2140 bytes
font_02_sfnt_off00007cf9.bin
64bc237762f42e6688ba3c9c6f44c8156ff22635b2526513f06ac2b857f34147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF9 10196 bytes

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