Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aba70d2be619dd7…

MALICIOUS

PDF

44.0 KB Created: 2020-10-07 19:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8901719bc10c54ef099d77d7eba261d0 SHA-1: 5382361fb3aa6c94b971129608b0104a9f8310ac SHA-256: 5aba70d2be619dd75b5dfd09ce8473ec55b8146da712dd6952d81f787e74d599
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ggtraff.ru, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains references to the same malicious URL and other URLs hosted on Shopify and other file-sharing services, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly indicated maliciousness.

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://ggtraff.ru/strik?keyword=best+self+self+planner+pdf In PDF document text
    • http://files.dhruvk.com/uploads/1/3/1/3/131380342/43015852ac.pdfIn PDF document text
    • http://files.miguezscience.com/uploads/1/3/0/7/130775295/c79324.pdfIn PDF document text
    • http://files.eleanorandevan.com/uploads/1/3/0/9/130968976/8611285.pdfIn PDF document text
    • https://site-1037860.mozfiles.com/files/1037860/2438527225.pdfIn PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/69441689815.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/75699175589.pdfIn PDF document text
    • https://site-1043035.mozfiles.com/files/1043035/pimesiwobet.pdfIn PDF document text
    • https://site-1043532.mozfiles.com/files/1043532/tiwanare.pdfIn PDF document text
    • https://site-1039280.mozfiles.com/files/1039280/18934347516.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/mazenozifefiden.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9939/2674/files/36495850213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/biduzutajobodut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8649/6415/files/kenwood_ts-450s_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3888/4519/files/ll_bean_sleeping_bag_blanket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8747/1806/files/desert_of_the_heart_jane_rule.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6376 4712 bytes
SHA-256: d6810dd2b4dfd9e7d0dd9bd15eb6f78411a5fa244e7ed4ae071ff3e84290d8f4
font_01_sfnt_off0000737c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737C 9900 bytes
SHA-256: 1e970383e6f1c6c039d2226127ba6b42809855d3c1c3bfd2b36df6d631a84c9d
font_02_sfnt_off00009568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9568 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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