Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ce1fff7fdeadca…

MALICIOUS

PDF

44.7 KB Created: 2020-10-03 12:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7d2656bfaa2a9d73c728b7cec6f6d23c SHA-1: 60fb3e28433cc43b5ee240c977e93766c930005f SHA-256: e5ce1fff7fdeadcafde4c9fe4a96ed66ed5bdf5b2687728db56653068257e2c6
124 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirector infrastructure and a link farm on disposable hosting. The ML classifier strongly indicated maliciousness. The primary malicious URL is https://ttraff.club/pify?keyword=herban+cowboy+deodorant+blossom, which is likely used to lure victims into a phishing or scam scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.club/pify?keyword=herban+cowboy+deodorant+blossom In PDF document text
    • https://site-1038699.mozfiles.com/files/1038699/88261523002.pdfIn PDF document text
    • https://site-1037283.mozfiles.com/files/1037283/58608972560.pdfIn PDF document text
    • https://site-1039156.mozfiles.com/files/1039156/rakajebakoxozogokoxevaba.pdfIn PDF document text
    • https://site-1036828.mozfiles.com/files/1036828/24999522693.pdfIn PDF document text
    • https://site-1040326.mozfiles.com/files/1040326/84000277444.pdfIn PDF document text
    • https://site-1040297.mozfiles.com/files/1040297/29121294310.pdfIn PDF document text
    • https://site-1042010.mozfiles.com/files/1042010/67186148393.pdfIn PDF document text
    • https://site-1037891.mozfiles.com/files/1037891/zeren.pdfIn PDF document text
    • http://files.wicksteadhorseplay.co.uk/uploads/1/3/0/7/130740517/zaronagixi-dikuwege-vijoxuvaturuwod-susiro.pdfIn PDF document text
    • http://files.magnoliawoodpool.com/uploads/1/3/2/6/132695492/xomepu-fazurebebif.pdfIn PDF document text
    • http://nerun.serendipitytrust.com/uploads/1/3/1/0/131070566/6033369.pdfIn PDF document text
    • http://fabesevu.nwrenewable.com/uploads/1/3/1/4/131453416/265e51b9.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://uploads.strikinglycdn.com/files/b3791412-f79b-42d1-bab2-e5804e62fcae/34795659135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/895e901a-7458-46d9-a9b9-f769d15819fd/46504885797.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_off0000640a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640A 5120 bytes
SHA-256: a3356960c6907f8a5457b0c0fadaf5a3cea825aa962b00fadd042968bb3d1d8a
font_01_sfnt_off0000755d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755D 10052 bytes
SHA-256: 53178f21ad6d562e2bded92a40c47417c9385093c5ab20beb8a38685aae56645
font_02_sfnt_off000097b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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