Malicious PDF — malware analysis report

Static analysis result for SHA-256 7edf4c8c775d7158…

MALICIOUS

PDF

49.9 KB Created: 2020-07-08 21:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 02443e75956b22c29b6ad3178380b2af SHA-1: eec4b0043beeb5cd353d0e0268ddcc84b4bcb278 SHA-256: 7edf4c8c775d71584c8bd3b46404b895736d6e07d57ed97ee841021ee2fcba3e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of embedded links, many of which point to suspicious or known malicious redirector infrastructure. The primary URL identified, 'https://ttraff.com/wb?keyword=pmp%20book%20pdf%202018', is flagged as a malicious redirector. The document's structure suggests it's designed to lure users into clicking these links, potentially leading to further malware downloads or phishing attempts.

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.com/wb?keyword=pmp%20book%20pdf%202018 In PDF document text
    • http://files.coyleband.com/uploads/1/3/1/4/131438840/45babf0ea4e6ba9.pdfIn PDF document text
    • http://files.unityofpalmyra.org/uploads/1/3/0/7/130775827/0d2098eedc2.pdfIn PDF document text
    • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdfIn PDF document text
    • http://files.lknailsandbeauty.co.uk/uploads/1/3/2/6/132681938/wovaxale.pdfIn PDF document text
    • http://files.blmslibrary.org/uploads/1/3/1/6/131606644/ebdfe5.pdfIn PDF document text
    • http://files.marikym.com/uploads/1/3/0/7/130740433/mufilajidunom_senukipiboxalan.pdfIn PDF document text
    • http://files.madlyeclectic.com/uploads/1/3/1/4/131483253/nuwitoduku_xafozovininu_lekilirox_navagad.pdfIn PDF document text
    • http://files.jamkatzent.com/uploads/1/3/1/1/131163957/mimoniweboruza.pdfIn PDF document text
    • http://files.clarevet.com/uploads/1/3/0/7/130738814/6baf8b64a8319.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rutaxitulos.files.wordpress.com/2020/07/kezusazirifasifijov.pdfIn PDF document text
    • https://datilivi.files.wordpress.com/2020/07/31308775220.pdfIn PDF document text
    • https://sanadaxime.files.wordpress.com/2020/07/25599989254.pdfIn PDF document text
    • https://wusefoluf.files.wordpress.com/2020/07/72625418303.pdfIn PDF document text
    • https://zunuxav.files.wordpress.com/2020/06/sutekejemuxika.pdfIn PDF document text
    • https://bazaroguj.files.wordpress.com/2020/06/91473717390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.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_off00007b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B53 4832 bytes
SHA-256: 1f82e993fab0ead100853eb3ae68824552bf0df4de608fbd8fffee0609ded6c6
font_01_sfnt_off00008bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB4 2188 bytes
SHA-256: baf84bdf40ca5391d7c84897fcec49e6a2e6fd28b01aafad1d14413831111027
font_02_sfnt_off000095bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95BD 10900 bytes
SHA-256: 1fd802cfc89cc046d3bec1ec23f8d775eb81a6bb5ad1dc01cd4c69bae88c9e26