Malicious PDF — malware analysis report

Static analysis result for SHA-256 62127aaaa434701d…

MALICIOUS

PDF

73.8 KB Created: 2021-05-19 15:08:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0295c6b2b15bd80b72d59ce07c3e285b SHA-1: a419f67bb241031a793b0127a120cc4ad21a443b SHA-256: 62127aaaa434701d846599eb3b604081187f23ccc28ff293afaa67229fec8cbc
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting an attempt to direct users to potentially malicious or scam websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://supadebev.weebly.com/uploads/1/3/2/7/132712355/4072063.pdf In PDF document text
    • https://fuwurukuzubefek.weebly.com/uploads/1/3/0/9/130969433/vexosedom.pdfIn PDF document text
    • https://tedamitaza.weebly.com/uploads/1/3/0/7/130740371/rebili.pdfIn PDF document text
    • https://xaxaguxoludu.weebly.com/uploads/1/3/4/5/134519627/063fe764.pdfIn PDF document text
    • https://radinake.weebly.com/uploads/1/3/1/8/131856095/nasaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/Ecv9gJ3Ok6E/wb?keyword=tp-link%20tl-wr841n%20firmware%20dd-wrtPDF link annotation
    • https://uploads.strikinglycdn.com/files/882d7b0a-edb0-4a3d-ac7e-4826096639b6/hp_motherboard_price_in_sri_lanka.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/cdburnerxp_portable_chip.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/povufuxok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801d94db-50af-4864-8621-1892ffaa063d/state_employees_credit_union_hours_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74439625-f162-49f3-b72b-55b537c205a4/jubodomerikokoguzone.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/fisizilonidinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07ef33d5-6796-4473-8a42-8c3532ad9f6d/71692518176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82256f43-1594-4c1f-b467-36a747258ec5/when_you_share_a_photo_on_facebook_what_happens.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/wrong_turn_2_tamil_movie_tamilrockers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d20f7a9-0349-4e90-8c17-c0441fac782e/are_old_case_knives_worth_anything.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e167ffe3-a699-4d67-85ef-8874cbd95acd/why_do_you_choose_to_be_catholic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b1ed9b-18d2-49c6-9265-cd9dfbf394a7/the_mystery_method_work.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/apache_tomcat_server_free_for_netbeans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1e2f707-6ba7-4830-9d25-6cd0e3b49eac/nifevererimopanakaserene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3a8cb0c-45b6-4d6b-8ea1-e8f88be2b5c4/sapovegezanuzekulifovile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b914f6-0048-47be-9511-1161d6c9c4b5/68626836496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e1887be-79d1-499b-89f0-7e696c09b86e/19190116338.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/67953385100.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/xewolinipo.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_off0000e08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08D 5480 bytes
SHA-256: c0bcd46c9b204e091a943d6d7a3053f6d71973c76ab2292cde8e3a2bccb1839d
font_01_sfnt_off0000f340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF340 11172 bytes
SHA-256: ad24e88a7747a049dffbbcb9159e1df91ed1663dcc51d0cfcc31637ef06963a5

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