Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e08adb8ad5a0a7…

MALICIOUS

PDF

40.5 KB Created: 2020-07-08 11:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: d114f06bf8e0ae0fa22707c0ad264ab2 SHA-1: e3f7fabd567b10f701ef0cfa64732f428ea83ee1 SHA-256: d8e08adb8ad5a0a718665b51912e3554234e04df9219d878a304729726aeb710
184 Risk Score

Malware Insights

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

This PDF document acts as a link farm, presenting a lure for "lung cancer pdf free download" to entice users to click on numerous embedded links. The primary link, https://ttraff.com/wb?keyword=lung%20cancer%20pdf%20free%20download, redirects to other potentially malicious sites, indicating a phishing or malware distribution scheme. The extensive list of PDF links hosted on various domains suggests an attempt to distribute a large volume of content, likely malicious, through a deceptive pretext.

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=lung%20cancer%20pdf%20free%20download In PDF document text
    • http://files.haafa.org/uploads/1/3/1/4/131407823/dapabidawekuvukuvapo.pdfIn PDF document text
    • http://files.mhsrunningtribe.com/uploads/1/3/0/9/130969046/2af9b84d0.pdfIn PDF document text
    • http://files.martialhartamas.com/uploads/1/3/0/8/130814279/6186ec0be38b.pdfIn PDF document text
    • http://files.jlwarfield.com/uploads/1/3/2/6/132683088/nirelepepagevip_zobudokodubedez_mavagigik.pdfIn PDF document text
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdfIn PDF document text
    • http://files.mrssheltonsclassroomeghs.com/uploads/1/3/0/8/130873830/wilelorovu_razus_tojexipituxazub.pdfIn PDF document text
    • http://files.ansomproductions.com/uploads/1/3/1/4/131454850/7100536.pdfIn PDF document text
    • http://files.francescaterberg.com/uploads/1/3/1/4/131437753/misimog_bumabodikun_warebulugetigub_tuvimufe.pdfIn PDF document text
    • http://files.whistlingfrogresort.com/uploads/1/3/2/6/132681002/masaberilanimubaloji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vikozapu259838642.files.wordpress.com/2020/06/3498486700.pdfIn PDF document text
    • https://nipobaji.files.wordpress.com/2020/07/boribokowanijisafifarujuz.pdfIn PDF document text
    • https://nenusanej.files.wordpress.com/2020/07/83416754925.pdfIn PDF document text
    • https://tabelafiwed.files.wordpress.com/2020/06/53844239750.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_off000061a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A6 4932 bytes
SHA-256: a34a1fcb629dc3dfbdc2edc5b86f82a126fd91c12629afc8458b3535bc12565e
font_01_sfnt_off00007284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7284 10204 bytes
SHA-256: e5e8eaea8ce7f49b1afc43fce5dc513907f81509698bdf4570a0e7662d42c134