Malicious PDF — malware analysis report

Static analysis result for SHA-256 63df943c4aa8a174…

MALICIOUS

PDF

75.6 KB Created: 2021-03-06 05:34:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bed709362ceb6fd01453909fb40612a SHA-1: 76c6f6f9170df850a9e9706470c0c434d38b87f0 SHA-256: 63df943c4aa8a1742457b7811103b713710fc6670ba0a870a643e0aa5c3f9d72
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting a link farm or phishing attempt. One of the embedded URLs, 'https://dafemum.ru/123?utm_term=how+to+scan+with+hp+officejet+4500+g510g-m', appears to be a lure for a technical support scam or a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/123?utm_term=how+to+scan+with+hp+officejet+4500+g510g-m
    • https://kuwovuvonix.weebly.com/uploads/1/3/5/9/135971109/17ce04d83f6ae8.pdf
    • http://nekalakizifefe.22web.org/the_emperor_s_new_school_episode_guide.pdf
    • https://dataremidesop.weebly.com/uploads/1/3/4/6/134697992/nokurekukomarasema.pdf
    • http://masonufidowex.iblogger.org/89830351493.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a161ff94-1a6f-4367-b6f8-8e513a5e676d.filesusr.com/ugd/4c7633_fa6373af6a6544b79d52c20caa995f1e.pdf?index=true
    • https://s3.amazonaws.com/poguvelefa/gagaxi.pdf
    • https://uploads.strikinglycdn.com/files/8837fe62-fa3b-4542-8717-439e84da7f8b/ketedaze.pdf
    • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_af02d58522344d6bbac99ecd1605f0a7.pdf?index=true
    • http://rijogutigoxek.epizy.com/fifty_shades_of_grey_2_full_movie_online_free_greek_subs.pdf
    • https://uploads.strikinglycdn.com/files/977be3ad-338a-40e1-9cc6-4cce35685830/wivokipitakamedugab.pdf
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_f4f65ba08036427b92ccfddb344e65de.pdf?index=true
    • https://uploads.strikinglycdn.com/files/80785b5a-8b7e-4932-a52a-fc9577ba660f/41745434558.pdf
    • https://s3.amazonaws.com/tajimipojimo/r_for_spatial_analysis_and_mapping.pdf
    • https://uploads.strikinglycdn.com/files/acf6be19-0eeb-4ee2-9fe8-1942e41cbf86/does_vivofit_jr_have_gps_tracking.pdf
    • https://s3.amazonaws.com/megelugik/xaketo.pdf
    • https://uploads.strikinglycdn.com/files/9616ff28-e6f6-4eeb-8829-f9010f3810b1/whirlpool_wmh53520cs-1_parts.pdf
    • http://zixoridepub.rf.gd/the_copyeditors_handbook_ebook.pdf
    • https://uploads.strikinglycdn.com/files/5a0513cf-f051-464f-b79d-b4a95e3c0dc4/black_ladies_short_hair_cut_2019.pdf
    • http://xasidesarilune.epizy.com/12627154929.pdf
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_a550d75e0f354ec799cc4b37308b4f80.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7cd.bin
c406e21f8e99719a56cf9787fe8fe4ad5bf6083d8afad3e04084256a6227b51a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CD 5868 bytes
font_01_sfnt_off0000fbdf.bin
19c70850f8015653e5e270fb9b091d97fb8f0bdcce5ee8da9d8d88a531e3b431		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 11312 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.