Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b26768444b40cbb…

MALICIOUS

PDF

42.3 KB Created: 2020-10-07 11:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f51f8d6effd21889028342311cb03ffa SHA-1: 623ad7409fbb9cb91e3777cf7d26dbcb57bff0df SHA-256: 8b26768444b40cbbb92a1446c48ec1db3a8077c38aa3533d098c5a4eebda70f3
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.link/pify?keyword=tubemate+apk+download+android+freeware In PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/rafodemuvilexo.pdfIn PDF document text
    • https://site-1042869.mozfiles.com/files/1042869/91433047820.pdfIn PDF document text
    • https://site-1043160.mozfiles.com/files/1043160/17544157844.pdfIn PDF document text
    • http://files.megannasto.com/uploads/1/3/1/4/131438539/0051ef36.pdfIn PDF document text
    • http://buvolo.widebaymotorcomplex.com/uploads/1/3/1/4/131438684/e0dcc4cdb71fb.pdfIn PDF document text
    • http://konin.hellohoneybeautyco.com/uploads/1/3/0/9/130969937/7001193.pdfIn PDF document text
    • http://files.mon-objectif-photo.fr/uploads/1/3/1/3/131378930/moxanebukirokegosu.pdfIn PDF document text
    • http://files.hiddenoakacresnigerians.com/uploads/1/3/1/6/131606407/kajetifeda.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/1/0432/3062/5950/files/vufodogun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1131/8182/files/chapter_9.1_naming_ions_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7597/1488/files/tudiduvofigowatad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/94831964243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3345/files/dr_gero_dragon_ball_classico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe91c4f-53a0-462b-a253-ffe3fae894f7/nesedoseworimidamoli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6606a27-019e-4350-bd66-b544dd5b81a6/61512038827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c5610f3-b063-4fdb-add7-6f09719f862a/84413016539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d82cbbe2-579c-4400-9eb8-0871d8765268/19769957635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76838f49-de97-4309-bb88-661ddc0b86db/38824959712.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000687d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687D 5256 bytes
SHA-256: 13c75c6f383647ac99e8dd32754800cdc63ac50396a093b520d0258c983e9cb2
font_01_sfnt_off00007a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A53 9848 bytes
SHA-256: 0893dd9333b804e68e78a9c0cdc841fd4672f4772d5e3975c9d045427c3acd0c

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