Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58d533ab36bf9f9…

MALICIOUS

PDF

57.9 KB Created: 2020-10-24 10:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 1756c4fe773c27bd03fa1d75995683f1 SHA-1: 06275f8e7f87885e0dcbe19b3c266db9916b2e10 SHA-256: e58d533ab36bf9f911734b9e7dc379d9b580701c32e786d221a6c6315af43b19
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/aws?keyword=apprendre+l%2527+arabe+gratuitement+pour+d%25C3%25A9butant+pdf In PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/51d06465e26ebbf.pdfIn PDF document text
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/simipu_kugetap_junok.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/wibikawumevesiz.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/vofogajuz.pdfIn PDF document text
    • https://vurofagulomefu.weebly.com/uploads/1/3/1/4/131452840/sixewanosapunu.pdfIn PDF document text
    • https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/jesegimo.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://uploads.strikinglycdn.com/files/ee0ef897-9a7c-454a-9b56-062b31e1071c/92762592503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af22be6e-0660-4fed-bcd5-6e4145acb036/accidental_death_of_an_anarchist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd5a7b79-4286-4b86-b770-7141db245c5e/98624729786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc828903-50e5-4fbc-87e4-f0c8aa1efda8/demolition_derby_multiplayer_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0135cd0d-cebe-4aad-80d7-fe5d1b29283d/taruwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b04685cf-929d-4741-99aa-895cc907ddff/zofofagadexuzepuxaxuwege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d0225f-47bc-485f-bee9-82cfa103dda6/tigusewagowigewowofezumat.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/altimetria_y_planimetria.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/gigawesapusexotu.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/kozumawunipek.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/orthographic_projection_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/naca_airfoil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3870/2748/files/petad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8882/2950/files/the_art_of_spirited_away_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/gigunodubijuwuwebabubexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9903/6058/files/vojale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2812/3295/files/lilasudosupafipog.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_off00008e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9A 5372 bytes
SHA-256: 0f165623421ab86f28ab4f04aa1015995d6e9b239ef0eedaeab216d5b9c2792b
font_01_sfnt_off0000a07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA07C 13000 bytes
SHA-256: 838ba2952118e816002897dc0d6fed3d0a5b3ca6ce6c69ac101dcce762492cbf
font_02_sfnt_off0000c8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BD 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f