Malicious PDF — malware analysis report

Static analysis result for SHA-256 79e33353d68e8878…

MALICIOUS

PDF

34.3 KB Created: 2020-10-07 12:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 926f0e57976f44b9f2035ad736bbc821 SHA-1: 6708bf0c7c03ba92de1917c1429e265fc26ad8ef SHA-256: 79e33353d68e887808ead73a5baf60af9b12e643d7d17e50a35409fc5ac231f0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=the+rime+of+the+ancient+mariner+test+answers In PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/tokujipexukokuxadod.pdfIn PDF document text
    • https://site-1037907.mozfiles.com/files/1037907/lowumuzuretigaxufax.pdfIn PDF document text
    • http://zazazurul.cwmdigitacollections.com/uploads/1/3/0/7/130739344/7f83f9dbca.pdfIn PDF document text
    • http://fawivizuf.sdadata.org/uploads/1/3/2/6/132682347/mavebexinised.pdfIn PDF document text
    • http://kubuguna.schultzwines.com/uploads/1/3/1/3/131383982/b369d.pdfIn PDF document text
    • http://files.goldstarenrichment.com/uploads/1/3/1/4/131406202/903960.pdfIn PDF document text
    • http://nabosabu.constancejoyvena.com/uploads/1/3/0/9/130969080/ac3fde4.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/1/0440/6332/6358/files/ap_english_literature_and_composition_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/4959/5292/files/tazidavobogakabamosegonof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8561/9094/files/73061939329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7484/2531/files/rotizulituziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6324/1632/files/whiskey_words_and_a_shovel_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8750/4583/files/pampered_chef_bar_pan_sizes.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_off000048b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B0 5132 bytes
SHA-256: 7a3116c3ce7e6ef5ea97158e7fcfab863f15e93a96c8a484fa3a328b0b9c1d55
font_01_sfnt_off00005a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A07 10164 bytes
SHA-256: 865e93a80f073e3547f98b213cb09dd16e61238cb89b7b229f46352ca7fcf91d