Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d41905b030fd79a…

MALICIOUS

PDF

49.8 KB Created: 2020-09-02 00:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc5fb99cf6262154751007fbf9f96436 SHA-1: 8b72a8733c1e682d92477239ebeccfd86dbe2133 SHA-256: 6d41905b030fd79a03d02161a4389a629d89ae8a06682b6c14c4f393e5ea4fa0
154 Risk Score

Malware Insights

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

The PDF contains a link disguised as a search result for a movie, which redirects to a malicious URL. This suggests a phishing or scam attempt to trick users into visiting potentially harmful sites. The presence of numerous external PDF links further indicates a link farm or redirection scheme, likely intended to obscure the final malicious 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=broken+arrow+movie++in+tamil
    • http://fedorahosted.org/lohit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_83f05633342643548e1a060c9763ae51.pdf
    • https://static.usrfiles.com/ugd/b8c837_697aaf178e0b4b4287b4993b826fa0c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7a857dc0c504b479524203800e8996a.pdf
    • https://static.usrfiles.com/ugd/4b68be_8c4b61df0af24fa99107b2b1f93e2fe1.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3bcece0ea7d4d40863468a3da084ff0.pdf
    • https://cdn.shopify.com/s/files/1/0432/9275/4076/files/sizasizus.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/34841286078.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/83943628628.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/50084587518.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/jugekofititomar.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_867b019e10634a8485181d155362e52b.pdf
    • https://static.usrfiles.com/ugd/b8c837_70b9141eab82439f9b62e8d9d77b190e.pdf
    • https://static.usrfiles.com/ugd/38bf1f_fbd4e24c1ef5455fbab4d7609807bc03.pdf
    • https://static.usrfiles.com/ugd/8b4172_d794c3b1fc8d4cd4812e75b902715327.pdf
    • https://static.usrfiles.com/ugd/a2e20a_d702f2aa240d4caca2ee1f5c0f62c6e1.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_f6d2d52cfa814083b846f4abfa4680bb.pdf
    • https://static.usrfiles.com/ugd/49be48_5db384babe214045961cf5e0e591ba99.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000666f.bin
f6aafca24215ca924317897532ccacbf74aace04c25d914c849ffe3d9c169a0e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x666F 12348 bytes
font_00_sfnt_off00005682.bin
a3797b5cc13a3556563c8bf22c6d62b60c9bb6e2b848a0b9487a60bb6e12f7af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5682 4704 bytes
font_02_sfnt_off000085d5.bin
792962dea9563a576be518555160c58f24fd39b685202b0d226890302050052c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D5 11200 bytes
font_03_sfnt_off0000abda.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABDA 4324 bytes

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