Malicious PDF — malware analysis report

Static analysis result for SHA-256 03201fc99fc00d41…

MALICIOUS

PDF

44.6 KB Created: 2020-08-02 00:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b0d9040c261aef28f7f05c53fe7bf65 SHA-1: 5d88a0ab95b954ed62551f703d8bcb5f12880c55 SHA-256: 03201fc99fc00d41928910affa6ca4a6ab0d02ff94ebec5d0aef597e9e032c62
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, suggesting a link farm or redirection scheme. The presence of a 'download button' lure further supports a malicious intent to trick users into downloading content. While no scripts were directly extracted, the PDF structure and malicious links indicate a likely attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=microsoft+visio+2007+free+download+full+version
    • http://files.sallyjcurtis.co.uk/uploads/1/3/2/8/132816066/3790766.pdf
    • http://files.stfrancis-sthedwig.com/uploads/1/3/2/6/132682113/2405117.pdf
    • http://files.lifesurprisesyou.com/uploads/1/3/2/6/132681931/xegozanozeluzupisol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/24175140840.pdf
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/tovuzovilipenifebifisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0858/files/loser_big_bang_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinufew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevesuladufutaniwor.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/55163525412.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/tukuvuzifo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4646/0830/files/dewalisezamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/50114501632.pdf
    • https://cdn.shopify.com/s/files/1/0438/5108/8032/files/brad_paisly_celebrity.pdf
    • https://cdn.shopify.com/s/files/1/0436/0696/6429/files/sakazufodu.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_off00006f22.bin
43e11c246d44398e6877e165e7961e6a81d4bd2f74724c349e3a230710b31148		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F22 5528 bytes
font_01_sfnt_off0000822b.bin
cfe88791ca48597d03d0fdcd91c962d5efa9afdf48e3c3f5fed736cdd4e57358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x822B 10144 bytes

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