Malicious PDF — malware analysis report

Static analysis result for SHA-256 720594d4c25523b2…

MALICIOUS

PDF

82.7 KB Created: 2021-03-28 23:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e31225b337a83ab0a95f02f91aa48fa2 SHA-1: ea7a3727325bf621f523148adb2612bc2e2bfb30 SHA-256: 720594d4c25523b21475fab1e8ba0b3fb897f93f0932f89e255ba707593d2858
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 0.9954

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://golowaki.ru/wix?keyword=spiritpact+manga+kiss PDF link annotation
    • http://nozumupi.medianewsonline.com/36160059792.pdfIn PDF document text
    • https://cdn.sqhk.co/vukixukafoga/LbRhbsF/batalin.pdfIn PDF document text
    • http://saroforati.medianewsonline.com/denon_avr-791_surround_receiver.pdfIn PDF document text
    • http://fagumawegoleleb.mypressonline.com/rachmaninoff_prelude_in_b_minor.pdfIn PDF document text
    • http://gifinibufenatar.medianewsonline.com/nosirafonirusoji.pdfIn PDF document text
    • http://jajemojotodi.iblogger.org/antigeno_prostatico_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tabakotodi/vigBiil/calculator_hide_app_uptodown.pdfIn PDF document text
    • http://xaludilurasos.iblogger.org/book_review_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nakijalufiw/hhjhyhh/56475950100.pdfIn PDF document text
    • https://cdn.sqhk.co/wanadujogo/uhfgejd/summer_sudoku_easy_247.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/lodazojamuva/cards_against_humanity_template.pdfIn PDF document text
    • https://0978d23c-7b87-408a-b4ab-ff16da0dae51.filesusr.com/ugd/369d68_2938517362b342789e62ddd5b46ecedd.pdf?index=trueIn PDF document text
    • https://765a5d72-5774-4a4d-a421-5c90307110ba.filesusr.com/ugd/f2a868_cabe3817bc5b4080b0bec56ad938e6aa.pdf?index=trueIn PDF document text
    • http://sogefotasir.epizy.com/58507568484.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/icsee_light_bulb_camera_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/zutigezafeno.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/lovely_child_image_free.pdfIn PDF document text
    • http://xifofemixogo.rf.gd/miguel_de_cervantes_don_quixote.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/hp_laserjet_1100_cable_adapter.pdfIn PDF document text
    • https://e6676b24-921d-4f57-8fca-beda98688f3c.filesusr.com/ugd/144d27_ac75cc20a5834bfebf697811fe3bf34c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/vasozefagagob.pdfIn PDF document text
    • http://pukexisigezome.epizy.com/sony_bravia_32-inch_lcd_tv_2008.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/battery_doctor_app.pdfIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_bad2bdb4425d401fac010a15f9794888.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wefadep/spotify_premium_iphone_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/trig_identities_worksheet_3_answers.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF687 3432 bytes
SHA-256: 53661661d049e221b1e078cca2ed94d3753910db68e77882599b623ed94b9a3f
font_01_sfnt_off000102c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C1 5388 bytes
SHA-256: 7273972b170b4aa77570072969a434877e3a402f49ea4381df698fa59ecac5c9
font_02_sfnt_off00011504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11504 11832 bytes
SHA-256: a64009d0e35112eae7e78ef998b6fa8c34a73b03e165e34ad59df8c35fc67dc3

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