Malicious PDF — malware analysis report

Static analysis result for SHA-256 baaa2cca26bb0b23…

MALICIOUS

PDF

42.3 KB Created: 2020-10-05 17:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e160363931dc3e1e10c3bfbd262350d7 SHA-1: 343f348dbfeacfba6b6eca3011a925c0ef910c58 SHA-256: baaa2cca26bb0b23aaae7d9f5631fedf13d6a93825cdd8466895e90bbdf2665f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ggtraff.ru/strik?keyword=igo+720x1280+apk'. Additionally, the PDF is flagged as a link farm, containing numerous external links, many of which are hosted on mozfiles.com. The ML classifier also strongly indicated maliciousness. These factors suggest the document's primary purpose is to lure users to malicious infrastructure.

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=igo+720x1280+apk In PDF document text
    • https://site-1040347.mozfiles.com/files/1040347/3669150708.pdfIn PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/4865176723.pdfIn PDF document text
    • https://site-1042880.mozfiles.com/files/1042880/sazapigipododizirusowij.pdfIn PDF document text
    • https://site-1036826.mozfiles.com/files/1036826/28192208584.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/xigovimekoju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3644/0733/files/kidkraft_table_and_chairs_outdoor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8096/1186/files/graphing_systems_of_inequalities_worksheet_algebra_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7692/2775/files/53400045734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4396/6104/files/ziwusumurib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/8843319279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3889/6028/files/the_joker_streaming_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5728/6820/files/avid_one_pager_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/vtech_cs6649_2_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6513 5352 bytes
SHA-256: cf84a8c74df3651b7a9af7afbf637f8350d4e16729e85b6302314a5dd5247b8d
font_01_sfnt_off00007776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7776 11100 bytes
SHA-256: 4cef64619a9b4cb2f85dcdd465b8b6fee8f45d3ce2a0b262453284ca9846f4e5

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