Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d5b3cabe0af9ec…

MALICIOUS

PDF

40.8 KB Created: 2020-08-31 06:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6de20a11e69e8961c369cf66d2585cbb SHA-1: 79ca0d17b675001cc9917992026574048cacf108 SHA-256: 77d5b3cabe0af9ecf70a5e5cc6d5b872d4133c1af00b51981a8c007f4aeba18b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into clicking these links, likely as part of an advance-fee fraud scheme. The presence of a malicious redirector URL further supports this, indicating an attempt to lead users to 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=zero+acceptance+number+sampling+plan
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/3395/0358/files/99615580209.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6165/files/25458656421.pdf
    • https://cdn.shopify.com/s/files/1/0464/8815/8376/files/kabbalah_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/risikolemegeboba.pdf
    • https://cdn.shopify.com/s/files/1/0450/4341/7246/files/beer_lambert_law_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0435/5260/4319/files/50993338660.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/wdc_smartware_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9833/files/lagewebeleditaxibafa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3505/files/monisas.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/nekurusatenav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3756/files/abstract_reasoning_practice_question.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9755/files/13954532793.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/fuvivopezomirowax.pdf
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/mobilab.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/jedifoxovu.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_off00006042.bin
6509719ee8315c5c564042360b0f7718d155133786379d1c44a0f2a0291c6e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6042 5348 bytes
font_01_sfnt_off00007257.bin
5020e7b1900ee5bf1f777c73584f6bdaaf0f7114618385263624129ac4ead745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7257 10624 bytes

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