Malicious PDF — malware analysis report

Static analysis result for SHA-256 0962195726103918…

MALICIOUS

PDF

86.2 KB Created: 2021-04-03 02:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 9eddb434737d6410f0dcd628446b890a SHA-1: caa50a4d5735e7272d1925708ace25e93b9cb46d SHA-256: 09621957261039189d04405b7fd5f05dfe835c5344a10b5f1639cb7578b1110d
136 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it's an SEO redirector for phishing, specifically a 'free-download phishing' lure. The embedded URL, https://seumenha.ru/award?keyword=cursive+alphabets+capital+letters+pdf, is directly associated with this phishing attempt. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest it's designed to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/award?keyword=cursive+alphabets+capital+letters+pdf PDF link annotation
    • http://biomaniix.website/e36_repair_manualo6hn2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375514/normal_5fd7a59796997.pdfIn PDF document text
    • http://nulivanofika.mygamesonline.org/britax_marathon_car_seat_infant_insert.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379486/normal_60186dbe65c37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383567/normal_5fee2de3780ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383692/normal_60065dfed9147.pdfIn PDF document text
    • http://niwopofe.scienceontheweb.net/30073534479.pdfIn PDF document text
    • http://sifuzifixezija.medianewsonline.com/ribesepuzemagurelitalobem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457008/normal_605f50e5e135d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459180/normal_6012bad13ae62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404953/normal_601ddcf7b8c0c.pdfIn PDF document text
    • http://giwewigipebi.medianewsonline.com/6855011558.pdfIn PDF document text
    • http://sellamorem.com/896378189865osrh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5fcd0a3f154f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_606464b801861.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/42600600475.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/how_do_i_change_the_light_bulb_in_a_panasonic_microwave_oven.pdfIn PDF document text
    • http://jojulupijawide.onlinewebshop.net/tevesugo.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/g_b_s_ka_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/blackmagic_intensity_pro_drivers_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/auto_clicker_no_virus.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/dojiweg.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/wokukaju.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/what_is_a_good_introduction_paragraph_for_a_compare_and_contrast_essay.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_off000111aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AA 5348 bytes
SHA-256: d4d84996fb7193d697abec356f260485c8e6d10ddd1c1d15487bdc88da1eb58a
font_01_sfnt_off000123ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123CE 11776 bytes
SHA-256: 9f5fbb2c7b3d3c59800e24ad21eb8065413572b9413e6444c39ae74930e350df