Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dbe7294d7fed4d4…

MALICIOUS

PDF

41.9 KB Created: 2020-08-13 21:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12b1276c890baa8ea71b6b61b3bd447a SHA-1: 4e1407ecfbadb6c551f3b5812db03111d5f29c68 SHA-256: 5dbe7294d7fed4d48b15e1e2c673bd5fe14749a8ff096d29de6538be27acef74
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The document body, though partially corrupted, includes text related to a fundraiser flyer and a URL that appears to be part of a link farm. The presence of a 'download button' heuristic further suggests a social engineering attempt to trick the user into clicking a malicious link. No scripts were extracted, but the overall structure and heuristics point to a malicious redirector or phishing lure.

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=beef+and+beer+fundraiser+flyer+template
    • http://files.meaningsoftheheartart.com/uploads/1/3/1/6/131637056/mepozuwolawijalipa.pdf
    • http://kosetog.pvs-ncnw.org/uploads/1/3/1/6/131606552/fanujifegekukuk_kadomobotesok_xilenanunuramup_tewatupapifita.pdf
    • http://kiratirex.therapyforyourchild.com/uploads/1/3/2/8/132816066/zotapef.pdf
    • http://files.friendslakeshorepreserve.com/uploads/1/3/2/3/132302735/namakedutejukuzo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bopeberovejaxurid.pdf
    • https://cdn.shopify.com/s/files/1/0436/6457/2569/files/93581541105.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/l_alchimista_libro_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/42450950726.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/advanced_sql_queries.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/xosodedopeterawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3013/files/reason_8_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/sidenuligapuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/27595448277.pdf
    • https://cdn.shopify.com/s/files/1/0437/0199/3622/files/83507236155.pdf
    • https://cdn.shopify.com/s/files/1/0433/8637/2246/files/39922258145.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_off00006257.bin
e9c3ed3f540e1a88d97c125c8b93b1261cdbe44360ae76622002507f47ecba42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 5480 bytes
font_01_sfnt_off000074e5.bin
58c1fa6a3eb995b4b5d961c2045c724e7959466730fd95998816fbd3b27e8305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E5 11080 bytes

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