Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcaf2afae9b143f7…

MALICIOUS

PDF

44.2 KB Created: 2020-10-07 11:11:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 17ed35e81c81e051da0a83117dc255eb SHA-1: 50214890b72d4e07e04a21f5fad1a367c50d5099 SHA-256: fcaf2afae9b143f764bfdef64b11dac45732170e49f4dabb9c370a5f9602186f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ggtraff.ru/pify?keyword=path+to+success+is+lonely. The document body, though obfuscated, also contains this URL and references to other PDF files, reinforcing the link farm tactic.

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/pify?keyword=path+to+success+is+lonely In PDF document text
    • http://files.natcampusmin.com/uploads/1/3/1/6/131637240/7915043.pdfIn PDF document text
    • http://kateruz.maggiescaravan.com/uploads/1/3/0/7/130775727/eb3452.pdfIn PDF document text
    • https://site-1037188.mozfiles.com/files/1037188/35101136672.pdfIn PDF document text
    • https://site-1036805.mozfiles.com/files/1036805/80002022632.pdfIn PDF document text
    • https://site-1038601.mozfiles.com/files/1038601/zijeduruvasixasoka.pdfIn PDF document text
    • https://site-1037057.mozfiles.com/files/1037057/kunumanezowuranekamofu.pdfIn PDF document text
    • https://site-1038897.mozfiles.com/files/1038897/sanarezebafimeba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/573b486e-c47a-49be-9dcf-09edbd487c3a/22833927479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c33cdef-7ad3-437e-966d-d31b59eea29a/sabotatido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f6d1e6e-a928-4462-956c-f26a484aa81f/32084919248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6599/4147/files/agoura_hills_library.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0969/6156/files/tico_tico_no_fuba_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1873/8600/files/32780678336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/james_james_morrisons_mother.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/prime_choice_auto_richmond_va.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_off00007059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7059 4896 bytes
SHA-256: 92efb8f27289087521d51efeea4e6ae3f85a4dae9898b02424b1cb55513037cc
font_01_sfnt_off00008106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8106 10380 bytes
SHA-256: 0a50596a0745004a430f5a73ec96bc3d1e0289af751c53a63897cea677d06b42

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