Malicious PDF — malware analysis report

Static analysis result for SHA-256 8926af61ceebf36f…

MALICIOUS

PDF

40.3 KB Created: 2020-09-19 21:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2f442515380557712094318cecb3d04 SHA-1: 287472d4d62218e71f477c30506734474fd3818d SHA-256: 8926af61ceebf36f814038fc1efedca04573f39db4e0602925800f7ddb1173d8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting it is an instruction manual, likely a lure to encourage clicks. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

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.me/wix?keyword=graco+pack+n+play+bassinet+instruction+manual
    • http://kujeli.melissachuang.com/uploads/1/3/2/8/132814930/7081dd80.pdf
    • http://files.christineboake.com/uploads/1/3/2/6/132695516/4489091.pdf
    • http://depolom.cannotbeboardered.com/uploads/1/3/0/7/130775162/4e3056481892.pdf
    • http://files.friendsofboltonlakes.org/uploads/1/3/1/3/131380005/zexovimijofan.pdf
    • http://fuwuriwot.dos-beachwear.com/uploads/1/3/0/9/130969754/2ae8d.pdf
    • http://jexaxibim.sammie-smith.com/uploads/1/3/1/3/131384082/3271821.pdf
    • https://8b2cb785-b14f-4a26-b097-9ce280ec48f2.filesusr.com/ugd/cd81e9_086b886faeb54506b36629111561a913.pdf?index=true
    • https://6459846a-ea2a-45be-8c3b-4ce3e251c71d.filesusr.com/ugd/2ac701_cbad97cc703d46a88d3c42ee8033fc1a.pdf?index=true
    • https://174f2d65-b45f-4b86-830f-6282034aa907.filesusr.com/ugd/f523c3_3a20cb6f4f964690a5a767d43ab30d4a.pdf?index=true
    • https://9b2baec3-aa5e-4f19-831d-806e49cb3555.filesusr.com/ugd/7e84b7_85b45a1783fa49df8c25d9db500a64cf.pdf?index=true
    • https://d8d97daa-f939-4173-8846-6d1edcea5130.filesusr.com/ugd/bba345_00b321b3a3ce4eaaadf5f09f8c14d1c8.pdf?index=true
    • https://872666f2-5aea-4366-b63c-d565be7e3db5.filesusr.com/ugd/08338c_1afc25d4ccf54e1caa94139272466d3a.pdf?index=true
    • https://6129cf55-1500-4aa0-bba7-c920e6f02aa8.filesusr.com/ugd/ae059d_81497b2eca964d21b177b11cef5a109b.pdf?index=true
    • https://1e2ad257-23e7-40b0-9fe8-4cb411b57d0e.filesusr.com/ugd/b98abb_bf331bc9da9445be89b408e62c8ab0ac.pdf?index=true
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fe6.bin
6715354884b1e1354c895a8392afb54af9e44fbe8cf9705e8f91a58db9aa18b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE6 5416 bytes
font_01_sfnt_off00007247.bin
afe5f98ccaf48d71cc4a64c7453f9f4d36e86c2172dfcbef3d7619bc6fbb0aa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 9904 bytes

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