Malicious PDF — malware analysis report

Static analysis result for SHA-256 50aafec4bd7856f0…

MALICIOUS

PDF

80.8 KB Created: 2021-03-16 05:37:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: d231ef727a2389e2c69b5d06db453ab2 SHA-1: cc610788348230233c4c838a23e92689a70097f2 SHA-256: 50aafec4bd7856f05987934ac0ce1601553bd27640bf58400d5f7967194d9ba9
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the presence of numerous external URLs, including one with a 'wix' keyword, points towards a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://nipisod.ru/wix?keyword=trials+frontier+apk+obb PDF link annotation
    • http://buvavarosavadar.iblogger.org/haccp_level_3_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391315/normal_6029040f0d26a.pdfIn PDF document text
    • http://zelifonobop.22web.org/28293227090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411694/normal_600f9a199e471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455898/normal_602f3251540e5.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/jebokizez/37918601785.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/fepesezorigaxez.pdfIn PDF document text
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_e4f7237591194f3290a424d9df227946.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/perurulexi/83142195868.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/xezoxiwiwaxokepaviweb.pdfIn PDF document text
    • http://wotekobadukabuz.rf.gd/alcoholes_y_fenoles_quimica_organica.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/bizerba_a404_manual.pdfIn PDF document text
    • https://9305c775-266c-4126-9ef9-90a5cffee957.filesusr.com/ugd/c3f88d_bbeef691800f4bf5b16c2183f10fa4bf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/remeranexe/is_garmin_vivofit_jr_2_waterproof.pdfIn PDF document text
    • https://0c6b7a74-1ca0-41da-943c-c268a208a416.filesusr.com/ugd/fef373_38bb5d30b7fc41af884cc2e4db4de603.pdf?index=trueIn PDF document text
    • https://76bf42c0-7447-45ed-8dd3-33f9786ae3ae.filesusr.com/ugd/ba2c19_3856886360e9429c9a8d8d6a436d24e1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/pefebilutinik.pdfIn PDF document text
    • https://47e244ab-6b1f-4ae7-97e8-86de5b619f9f.filesusr.com/ugd/e1d12c_e11c5ab067e94912b8e5db18f2e4be71.pdf?index=trueIn PDF document text
    • http://zaritopewebo.rf.gd/beautiful_butterfly_wallpaper_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/business_meeting_agenda_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/star_wars_galaxy_of_heroes_hack_android.pdfIn PDF document text
    • http://gununusaw.epizy.com/ranaloroganunixafelid.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/aristocats_arpeggio_song_sheet_music.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_off0000faaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAF 5048 bytes
SHA-256: 69602d763cafcd4dc46b5c6ab0abbdecac4a8fbeaa20d164cc45f96ddca40e35
font_01_sfnt_off00010be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE4 11816 bytes
SHA-256: 08c744fba1dcc88e6b1597435368b3789b269aa923bed980dac53587a9577f30

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