Malicious PDF — malware analysis report

Static analysis result for SHA-256 f887ccec3c39c9da…

MALICIOUS

PDF

80.3 KB Created: 2021-04-07 07:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 039599d9ee64f18b5a41aab761743743 SHA-1: 8a08fda176136224d7792f07bc19945b64a283c0 SHA-256: f887ccec3c39c9da71bd4b8f492db5c411a2896475c44365e4accdcd5856906d
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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://gimoguvi.ru/wix?keyword=swtor+companion+customization+lana PDF link annotation
    • http://fevunuvosaro.22web.org/boston_bruins_printable_schedule.pdfIn PDF document text
    • http://rufisurerupu.iblogger.org/lg_g2_mini_price_in_nepal.pdfIn PDF document text
    • https://sobopagugakevul.weebly.com/uploads/1/3/4/8/134881985/lozepu.pdfIn PDF document text
    • http://faxagigotitij.66ghz.com/antivirus_for_pc_windows_7_filehippo.pdfIn PDF document text
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/rekujebogufe.pdfIn PDF document text
    • http://tobazoduto.22web.org/18964946213.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/gasodamuza/how_do_you_flush_power_steering_fluid.pdfIn PDF document text
    • http://bozomeza.rf.gd/555793017.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/pioneer_mvh_s600bs_reset.pdfIn PDF document text
    • https://85ed388a-52e0-4e79-9737-9d4b769dda71.filesusr.com/ugd/bb10c5_51769e04492844f0944a6260b98672e6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/4-7-8_breathing_method_sleep.pdfIn PDF document text
    • http://sepinolet.epizy.com/12653912565.pdfIn PDF document text
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_bc65091278b24d28a586e886800b9194.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sedowedi/alexa_default_voice_assistant_android.pdfIn PDF document text
    • http://ditonumu.epizy.com/aktu_anti_ragging_form.pdfIn PDF document text
    • http://sobibuxasegisun.rf.gd/focused_antenatal_care.pdfIn PDF document text
    • https://f4dd034e-00c7-465c-b850-fb2d75accad5.filesusr.com/ugd/769f78_91fcd0daa5984ae895aaa9a55d1574dc.pdf?index=trueIn PDF document text
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_0ffee213c3404ec7aafdaea33ca2e066.pdf?index=trueIn PDF document text
    • http://jizonizop.rf.gd/chamatkar_movie_songs_pk.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/26679758964.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/61971884125.pdfIn PDF document text
    • https://fe426b01-1dd0-498a-b08e-7ec37e320b94.filesusr.com/ugd/6b45f0_d1e4232c31eb4b5e86a9f9c133af5b69.pdf?index=trueIn 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_off0000fdc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC0 5324 bytes
SHA-256: ec077fd86a24c843c9bcb74d3a537cf65e65380de58dd82834324c97a1291aaa
font_01_sfnt_off00010fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDF 10540 bytes
SHA-256: a91da6bf4b7a61abe2c88882c7b272b0f742082213d819ce94d8b1ca54f61ca0

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