Malicious PDF — malware analysis report

Static analysis result for SHA-256 69ebf6e000b4700f…

MALICIOUS

PDF

86.9 KB Created: 2021-03-16 10:58:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: b1a70bfec31c9196ed7f739017ffa475 SHA-1: 2c4f142c6993ba658fee94bf597695f7d94c560a SHA-256: 69ebf6e000b4700f4ef4cff8710a274dff89cba1e62b63a19de1d2d3d6e1962f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting or potentially malicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a common tactic to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/wix?keyword=high+school+physical+science+interactive+notebook PDF link annotation
    • https://dolibaradodusop.weebly.com/uploads/1/3/4/5/134595809/lekog.pdfIn PDF document text
    • https://kowelisabames.weebly.com/uploads/1/3/1/8/131857626/42bda8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_603ec587ba534.pdfIn PDF document text
    • https://cdn.sqhk.co/wexapitode/giijhft/arabella_pro_medium_font_free.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/N2hdZRF/commanders_mtg_2020.pdfIn PDF document text
    • http://forecast.bet/xuvegojegatejepojejoxg18rr.pdfIn PDF document text
    • http://walkover.me/35708423056dc7yb.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/iejaif1/nexaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487903/normal_6025738c664e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_5fe70da530c7c.pdfIn PDF document text
    • http://maykistore.ru/planner_2019_freettdag.pdfIn PDF document text
    • https://vanosejifewufe.weebly.com/uploads/1/3/0/8/130814052/4575331.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/122cabe4-9a07-4f92-93d4-c3b37c6e8872/common_hazards_in_the_workplace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb65382b-ab7a-4e2c-bcbf-3448c98d6a5e/sports_illustrated_magazine_size.pdfIn PDF document text
    • http://dagilupakov.rf.gd/bein_sport_apk__2017.pdfIn PDF document text
    • http://mogojulelazotit.epizy.com/generac_5000_watt_generator_manual.pdfIn PDF document text
    • http://lozefedewi.rf.gd/95778014771.pdfIn PDF document text
    • http://dagapevas.rf.gd/filing_police_report_after_the_fact.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6F 6440 bytes
SHA-256: edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75
font_01_sfnt_off0000fd65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD65 5524 bytes
SHA-256: 1626fa44cecfd3799f5c27e9b5bb31c98328d78162389a31c39317ab05c47e30
font_02_sfnt_off00011039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11039 11392 bytes
SHA-256: a72848eb1a34e38e19968ebdbaa55759d1d3bd1066119ade0e19e9b3bd24ca29
font_03_sfnt_off00013723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13723 16444 bytes
SHA-256: fbf88563f7b5584fc9dcd746e7d386c7733e1755bc0d3c4d85415f6c93c4fb6a

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