Malicious PDF — malware analysis report

Static analysis result for SHA-256 a729bca749b67ddb…

MALICIOUS

PDF

56.5 KB Created: 2020-08-10 01:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3768469ace5d14b524fe74203d399c87 SHA-1: 4bcafb61f7862a35a6e76b9611ac947b86e4db2b SHA-256: a729bca749b67ddbfc36e2e8e52f1d832e631ffbdbc4fd74184471cab7f3b973
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=acidit%25C3%25A9+titrable+pdf, which is likely used to redirect users to a malicious site. The document body and embedded links suggest a lure to a phishing or scam page. No scripts were extracted from this sample.

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.cc/pify?keyword=acidit%25C3%25A9+titrable+pdf
    • http://files.reneeisverycool.com/uploads/1/3/1/6/131606963/69d54bd2a.pdf
    • http://kaxezi.kofc420.org/uploads/1/3/1/1/131164250/2f6de67c8f5.pdf
    • http://files.harttravelguides.com/uploads/1/3/1/0/131071137/xubepimakigi-jesusuz.pdf
    • http://files.honeranch.com/uploads/1/3/1/4/131483719/wogebaf_posebigiro_bisigomotoju.pdf
    • http://files.bellabrowsspa.com/uploads/1/3/1/4/131452867/luwagenulu_molitekibikika.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/letudavurokagunujugu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0282/8699/files/how_to_save_on_imovie.pdf
    • https://cdn.shopify.com/s/files/1/0432/1397/9812/files/levepefuzunu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xixuvedivikeror.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8902/files/apology_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8173/files/vonalajobatarupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0617/3081/files/piping_designer_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/7717/9294/files/neet_new_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/8691/2413/files/empirical_process_techniques_for_dependent_data.pdf
    • https://cdn.shopify.com/s/files/1/0438/6576/8096/files/the_natural_history_book_dk.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/biginazivadetib.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/45190840762.pdf
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/18828071028.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fa1.bin
dea14fa8c2dbf806792e8687767657a3f6d07b2eb51571679700ed4d73d9f3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA1 4812 bytes
font_01_sfnt_off00007fb1.bin
e9ff157d48630df79a934fe0ba81c400423ec5b798e0bad98ce130966a733c58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB1 11348 bytes
font_02_sfnt_off0000a48e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA48E 4324 bytes
font_03_sfnt_off0000b28e.bin
820f2abbacd3f8c4a771e6dc784461b1dbba161d3211476cfeaf7ada146a6e2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB28E 9776 bytes

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