Malicious PDF — malware analysis report

Static analysis result for SHA-256 84007dce46bff829…

MALICIOUS

PDF

40.1 KB Created: 2020-09-10 03:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 507ec1745dd542cbdb3247b9e855a98e SHA-1: 62f755d3c0e6dee608818dbdc0e7065c1c798c75 SHA-256: 84007dce46bff829677294d2590cee89fbb2228f4bf9435b5cbfba9a036d3332
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, likely as part of a phishing or scam campaign. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and the presence of the URL https://ttraff.club/wix?keyword=cryptopia+app+android strongly indicate malicious intent. The document body and embedded links suggest a lure related to cryptocurrency apps, aiming to trick users into visiting the malicious site.

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.club/wix?keyword=cryptopia+app+android
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/83f04e_35954110dac746acb0ae139f850cdd1c.pdf
    • https://static.usrfiles.com/ugd/6116da_563215c415594a349e947e73eb75eb39.pdf
    • https://static.usrfiles.com/ugd/ae059d_9dedffe203104b35b71f8d507b1852a1.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_863f2a588a684c9baf5ed156d1f70cf0.pdf
    • https://cdn.shopify.com/s/files/1/0457/3672/2588/files/asco_guidelines_head_and_neck_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0440/5713/3221/files/zofotivaruxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/dezitewuvamukajaributatuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/esl_library_grammar_practice_worksheets_present_perfect.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/95201200731.pdf
    • https://static.usrfiles.com/ugd/2eedf1_57e0e91cdbb14d5b858c2f5d5c403e35.pdf
    • https://static.usrfiles.com/ugd/b8c837_34b50b827e3f437b9d9bbf6ab7b54bb4.pdf
    • https://static.usrfiles.com/ugd/a58b01_7b50179f3690468aaad5f627bdb5b5e4.pdf
    • https://static.usrfiles.com/ugd/4479ed_90e6463f14e748af8a0cd86cbe9571cd.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_off00006164.bin
3b8ea8441913cadeb5c355bf6231facd13b0c77084e0e1c0f9928bc6177ca94b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 4752 bytes
font_01_sfnt_off0000719d.bin
d3e26fbc31c719138e9593cce1437d98e70122407e36f336d130551a18cabfd7
pdf-font-stream PDF embedded font (sfnt) at offset 0x719D 10072 bytes