Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c3e401393472e95…

MALICIOUS

PDF

46.5 KB Created: 2020-08-17 13:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de99e522b9aed551039c73d871420f1f SHA-1: 1d21186f563dd6409d9842a569e04623ecaf02fc SHA-256: 6c3e401393472e95098337caea43c4cd02eec51c22fa2077c36552ba12db15b8
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources, many of which are benign Shopify links but one points to a suspicious domain. The presence of a 'download button' lure further supports a malicious intent to redirect users to potentially harmful content.

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=battle+of+the+sexes+questions+and+answers
    • http://xisuw.success4hoopz.com/uploads/1/3/0/8/130813834/1b0a6044bc6a5.pdf
    • http://files.exchangedragon.org/uploads/1/3/1/4/131455398/138ed0f56fcc551.pdf
    • http://files.aliceannephotography.com/uploads/1/3/1/3/131379447/xisejexopore.pdf
    • http://files.annagalatirealtor.com/uploads/1/3/1/4/131452887/rulosoxuzonug.pdf
    • http://sirekutab.carriewears.com/uploads/1/3/1/3/131384536/6279212.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/synonyms_worksheet_for_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/89925573331.pdf
    • https://cdn.shopify.com/s/files/1/0431/9503/9905/files/narasimha_karumanchi_data_structures_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/17128839195.pdf
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/quitclaim_deed_illinois.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/xawuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5814/2120/files/methanol_water_distillation_column_design.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/loresesiwuxoxesisixemitiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/konokakapi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1742/1479/files/80418282042.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4220/files/order_of_adjectives_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/7762/3194/files/wivibulez.pdf
    • https://cdn.shopify.com/s/files/1/0439/1396/9819/files/wow_troll_names.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_off00006f07.bin
878ee525d787a97a4dc3187ace8cb0dd05765f242c73878655fbcaab1c585703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F07 5332 bytes
font_01_sfnt_off00008131.bin
2ddb4f44d3b0574e4820c420f6b8a7e4ebe4374d943e77ceb807a8b87f6284ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8131 13348 bytes

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