Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be80c7f36d634b9…

MALICIOUS

PDF

42.9 KB Created: 2020-08-02 22:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f057cbfc8111de4de571dbffac0d32f7 SHA-1: 1f264a89abfd983933e745a69c3e54d2e1ed1fd0 SHA-256: 5be80c7f36d634b997b266ebfed2a868c9c7612dc8ae07849c35219315cc9e5b
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One prominent link, https://ttraff.ru/pify?keyword=space+engineers+thruster+calculator, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, indicating an attempt to lure users to malicious infrastructure under the guise of a game utility. No scripts were extracted, but the presence of a malicious redirector and the link farm structure strongly suggest a phishing or malicious redirection campaign.

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.ru/pify?keyword=space+engineers+thruster+calculator
    • http://files.hillvalleyfarmdairygoats.com/uploads/1/3/1/8/131856158/8387303.pdf
    • http://files.hopewarmingpontiac.org/uploads/1/3/2/6/132695887/wirodifev.pdf
    • http://files.brendacsmith.com/uploads/1/3/1/1/131163613/ca96edc5cc63eea.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/fovalemafiluzunaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/mefipukit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6948/0866/files/magalofup.pdf
    • https://cdn.shopify.com/s/files/1/0437/6055/0046/files/kogedovajufufidetidu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/pitotuxefapumog.pdf
    • https://cdn.shopify.com/s/files/1/0431/6758/0322/files/1873584281.pdf
    • https://cdn.shopify.com/s/files/1/0433/7002/1014/files/ferozuzutabubotunawajit.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/sinubuwegusuwabimafofaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/81674399250.pdf
    • https://cdn.shopify.com/s/files/1/0435/7803/2296/files/joselap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.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_off00005f43.bin
0664dda5042e40b29d9fee19dab1e59a43bed29d8f5dcd91328558ffef2ff0c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F43 5300 bytes
font_01_sfnt_off00007140.bin
bf116fc91363de88316c75538fa5972991da181edf7eb8728fc596d5a12af347		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7140 14536 bytes

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