Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98e8d1c8ddc6a2c…

MALICIOUS

PDF

46.6 KB Created: 2020-10-28 21:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4bcde6dd5d3b2a0f89397ac7bfbed8c4 SHA-1: 5ba38085e2a339027ded8f43fdbd09677d4f3bdc SHA-256: d98e8d1c8ddc6a2cd1b8dbbb571c8ff58e02f79a2a3d382f0d252388037c781d
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.me/123?keyword=one+belief+at+a+time+worksheet In PDF document text
    • https://ralokokotozupar.weebly.com/uploads/1/3/4/3/134340958/zagusipuwa-sodaxerumubevip-vopazagug.pdfIn PDF document text
    • https://walinakonefal.weebly.com/uploads/1/3/4/3/134316097/niwefozeri.pdfIn PDF document text
    • https://wajatajosow.weebly.com/uploads/1/3/4/4/134487766/tiwigobe_kigiwurig_sotodejiz_somebu.pdfIn PDF document text
    • https://zonepebitebebo.weebly.com/uploads/1/3/4/3/134369254/7799179.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/dababav_felirag_vamapu.pdfIn PDF document text
    • https://nosekuge.weebly.com/uploads/1/3/2/7/132740467/fozedojipezaja.pdfIn PDF document text
    • https://fawubanine.weebly.com/uploads/1/3/4/3/134321827/c840172a63ffdc.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/mupuvawarobuva_revananoxobo_fuwuvitos.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006fd9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006fd9.bin)
    • https://uploads.strikinglycdn.com/files/41131101-914b-4207-943a-8ea217a92cb5/luvovupogewef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8794/5622/files/37545617446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94da9324-5b78-4061-9bca-6382fee31f79/14472685610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25f9baf2-1e2b-4516-92b9-36485e1cc3be/romeo_and_juliet_prologue_quizlet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1187/3189/files/lego_star_wars_bounty_hunter_pursuit_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6381/0975/files/muvegodijovobuludobawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/rukip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbae86eb-ab8d-4961-b700-a8731108a396/68176164896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5226/5379/files/29304725475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/371a9ecd-2c3c-411b-9968-81e688c699e4/vepodudonokejazaremetofek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0026ea6-82da-4271-8650-d43ce5080d44/xoxajufuxatatumide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/870d9086-16d7-4ef7-aa37-dcb59ba38c9f/57699155892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9235/2928/files/21108612866.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 extracted file (font_00_sfnt_off00006fd9.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD9 5332 bytes
SHA-256: d269e3b6f09729b67909a4340ba3fe19c5ab75a198812dfa8b189e2788d7f664
font_01_sfnt_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 13616 bytes
SHA-256: 2dda1c24fa817f4c5891a03d1575bf34d46380fb9fdf7eb57b4356aaf8e9341d