Malicious PDF — malware analysis report

Static analysis result for SHA-256 0656906ded16e7da…

MALICIOUS

PDF

51.3 KB Created: 2020-10-04 20:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 30013884cd61de7f25ca524a7355b228 SHA-1: 340f4d40a9089b060ac2aa7b4ede85255fa11eba SHA-256: 0656906ded16e7da9e9d44d8b0b2c2675680d425e78eaa6800aa456f21d7e0f3
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://gettraff.ru/pify?keyword=motion+to+expedite+discovery In PDF document text
    • http://lerax.ocbainc.com/uploads/1/3/1/6/131637308/zokosizewapa.pdfIn PDF document text
    • http://nenafe.fineartfitout.co.nz/uploads/1/3/1/3/131380183/6f74df0b.pdfIn PDF document text
    • http://files.sos22.ahsc-nm.org/uploads/1/3/1/4/131453615/bb3e017f17.pdfIn PDF document text
    • http://mojisiv.nataliemarie.org/uploads/1/3/1/4/131437502/kufixawaro_zopamisire.pdfIn PDF document text
    • http://jafut.marlonon.com/uploads/1/3/0/7/130776415/67b66d4c2.pdfIn PDF document text
    • http://files.cassiemseinuk.com/uploads/1/3/0/7/130775366/nelike-kufeboge-rafalus.pdfIn PDF document text
    • http://jezam.4vie.co.uk/uploads/1/3/0/8/130874411/famenedabalu.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/1/0435/5106/4228/files/82611598730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5624/2344/files/12258995983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1967/4271/files/24_volt_power_wheels_with_rubber_tires.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b796df82-6caf-4b44-8e77-b7f4d6c7ea34/gujejepupuzijawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/225cbce6-613d-4bee-8095-20a37c675830/zagojologarilovefitewarib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc3ca4e-679f-45c2-86cd-deec092e6a9e/33273838369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/051e9cbe-b7f8-4102-b1f1-023dacad75d0/zazabezimuxafoxa.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_off0000878d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878D 5060 bytes
SHA-256: 60b250f6f798c7cde5d9d92cd1d8f17be31b1b2e0968672e03d760f33c9b79d0
font_01_sfnt_off000098f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98F4 11996 bytes
SHA-256: 0aed90bed6799043bedaf340d92ecb0e952f15a1e119105e624059ceacbd47a5

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