Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f14a027be0f4e01…

MALICIOUS

PDF

57.6 KB Created: 2020-10-10 04:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e0d5ebc55b95853baaa340ee6482363b SHA-1: fd4777a4130fca3356f761bd58dc037e3d5d6a22 SHA-256: 0f14a027be0f4e01b8a703ef17fc85a4b1f5552014b4851ec4efa311744abb30
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes a URL that matches the malicious redirector, suggesting an attempt to lure users to malicious infrastructure. The presence of a large number of external links, many pointing to Shopify domains, indicates a link farm strategy, likely for SEO manipulation or to host further malicious content.

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=roku+won%2527t+turn+on In PDF document text
    • https://site-1038427.mozfiles.com/files/1038427/nufufopejaxoxixigigitug.pdfIn PDF document text
    • https://site-1041950.mozfiles.com/files/1041950/50235263664.pdfIn PDF document text
    • https://site-1038351.mozfiles.com/files/1038351/lewalovor.pdfIn PDF document text
    • https://site-1038743.mozfiles.com/files/1038743/tefijegi.pdfIn PDF document text
    • https://site-1039525.mozfiles.com/files/1039525/pabitexaxi.pdfIn PDF document text
    • http://sasamu.christistewart.com/uploads/1/3/1/3/131380480/zoreruxo_zatos_satag_fisegizelem.pdfIn PDF document text
    • http://dikugefux.juelzofthenile.com/uploads/1/3/2/7/132741181/jowile_visomirevipotuk_datupofa.pdfIn PDF document text
    • http://files.westakronfamilydental.com/uploads/1/3/0/7/130775518/22c5c0a.pdfIn PDF document text
    • http://files.bnkrescue.com/uploads/1/3/1/3/131384604/feganofivet-jigivojaxopu.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/1/0437/4632/8737/files/sonic_forces_music_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6649/7440/files/54260107542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/9530/6655/files/make_room_for_tv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3887/3512/files/28382019003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4364/2792/files/773868092.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_off0000a42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA42E 4456 bytes
SHA-256: 09129ba99fa1b099a5113b85122174659832b0a3bcb5f74491b5d95fc8c4b52a
font_01_sfnt_off0000b382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB382 11168 bytes
SHA-256: 108179c2f93086868557c12ecb0f6e4384f65a2537e3fb98bc8cdbf5b1aaf71e

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