Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1f93a47f1ae957…

MALICIOUS

PDF

49.5 KB Created: 2020-10-19 02:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 994fdddca3a847db20744eddbb8b8397 SHA-1: fafbe1ca4ed937ab53a84a8b1bd50ee22f129cbd SHA-256: 9a1f93a47f1ae9571271ac494078367c2651fff38cb7b541745db724168f0aaa
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=top+10+offline+anime+games+for+android In PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/nukaxiweroteme_zotujaxotejadu_rekajaka.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/roralok.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/987b21c6b.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/vubofinemomuru.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/gokitetuj-tadidi-labililesile.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/xexumetofir.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/8829236.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/3503281.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/20c3f721d7dce3.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://cdn.shopify.com/s/files/1/0481/6545/3975/files/karius_und_baktus_geschichte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3674/0264/files/i_hate_game_of_thrones_spoilers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3442/3708/files/helix_charter_canvas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4031/1976/files/fox_valley_tech_appleton_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1632/9672/files/xasuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2020/0347/files/fisuzevodaredirefidetaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/series_and_parallel_circuits_worksheet_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/18431735210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0025/2581/files/dnd_blood_hunter_lycan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6255c8b5-bb71-4364-9434-170790fcd429/totejolefewalusajesam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df76c8a3-de55-4f88-ae7d-c6cffdd4a071/mosoketeradotuturomirizux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa9158c-8160-448e-9019-d562ab48eb36/xifegokewefutexivanofewez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82486b33-afbc-433b-8bfb-461faea51e12/vonobalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f870a7d-60c7-453a-bbc2-23f22f2cddf7/79188312176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04ac068a-1274-40c2-b1c1-a2ccbe3604ec/3362387889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c649cad-30c4-4f57-808c-31496b01d4e9/murojezowaxeweliwif.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_off00007558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7558 5212 bytes
SHA-256: b75e81b6a4c0823ad9671b39957eaa636901efc445bd7017e68c4793304ca6ef
font_01_sfnt_off000086f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 10564 bytes
SHA-256: 32a3b3007a1154568a3cc8f847f15de83e3a7337e328ffa6805d46e688b5543b
font_02_sfnt_off0000aa14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA14 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2