Malicious PDF — malware analysis report

Static analysis result for SHA-256 44cf24081e1d11e9…

MALICIOUS

PDF

90.5 KB Created: 2021-03-14 14:27:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e6d18a3690186cbb3fa70963e0a22a3 SHA-1: efa170d40fa2d7f8c979526791eef9bdabc2feeb SHA-256: 44cf24081e1d11e9619ac4696c7ceb2e2f3ce8fcb0595a2b8b50ceb7297a10bb
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a "PDF_SEO_LINK_FARM" suggesting a large number of outbound links intended to manipulate search engine results or redirect users to malicious sites. The presence of a ClamAV detection for "Pdf.Phishing.Trojan" and ML classification further supports its malicious nature. The document body, though partially corrupted, mentions "Panda pop cheats 2020", indicating a lure to attract users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=panda+pop+cheats+2020
    • http://normaa-id.com/dapple_metallic_effectqbyo4.pdf
    • http://bupetud.xyz/fish_mate_f14_automatic_aquarium_feederyqrm5.pdf
    • http://sweetygirl.club/zifesonolezuvawudajoximub5djtr.pdf
    • http://trokot-newshop.online/nj_transit_bus_freehold_to_nycc4bnh.pdf
    • http://legionmone.xyz/formato_certificado_medico_escolar_para_imprimir_sep5m4kt.pdf
    • http://noverst.xyz/there_is_there_are_worksheets_eslxmyeo.pdf
    • http://grenkasalo4.xyz/71282095309l5d0s.pdf
    • http://mgacessoria.online/first_aid_kit_band_illnessb7a2m.pdf
    • http://femetorisufi.sportsontheweb.net/wadoxozexado.pdf
    • http://gepopusoka.mypressonline.com/xetudidukiwop.pdf
    • http://static-get.top/car_raffles_in_californiaoaz43.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_281314babee44d94b74fc6a9938fd677.pdf?index=true
    • https://bd15da75-ee01-4ad3-8b22-4778d9929f37.filesusr.com/ugd/1abc29_2edc7d915e3d4ef6a034d75b72b26b9b.pdf?index=true
    • http://mezureda.rf.gd/agriculture_gk_download.pdf
    • http://romutipi.rf.gd/who_assesses_the_safety_hazards_in_the_workplace.pdf
    • https://5b2b9875-3923-4577-9ef6-0527498c95e7.filesusr.com/ugd/4e6dd5_d17d902dc4dd43d982f3766889c0cb0d.pdf?index=true
    • http://wanudoxemix.epizy.com/carte_du_monde_deco_grand_format.pdf
    • http://xajokaxakubif.rf.gd/64346246701.pdf
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_9d481419fcbb4f7e8ac0af86f10326ea.pdf?index=true
    • https://9f503c4c-bf14-4dcb-9a7a-68e0e5bb3568.filesusr.com/ugd/8ac1ab_a88d6070e0744ee4a771862e1ba64d91.pdf?index=true
    • http://negavutagogo.epizy.com/65434981486.pdf
    • https://f110cc6a-49d6-427c-9ab6-a3a4d323b004.filesusr.com/ugd/9e53d4_4486f31de59a413e8995e0afee040ea4.pdf?index=true
    • https://cfae799c-d04a-4395-b2c2-700dffd2ed5c.filesusr.com/ugd/15504a_15507d6c763e4ecbb2c21d6395b442e3.pdf?index=true
    • https://c948e902-2437-43f3-9f1e-7aaad30688a7.filesusr.com/ugd/464a75_f36d2bbea11347ddaa7274218b9a3590.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6ea.bin
845ef245f7e2e4dfcfcc703d4ee994741fb813bde6c4ae908556e947189e76b4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EA 5048 bytes
font_01_sfnt_off000107f7.bin
07ecde503da4517b8f20e35e4c6cab051d84b79abe310f3c2ada97187e7d04e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x107F7 1852 bytes
font_02_sfnt_off000110e9.bin
d7851a47aa5e908d4d1b0cc848802f84e43c8a48882064df2ca942039bebfa4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x110E9 11508 bytes
font_03_sfnt_off00013843.bin
76d044abe4d13ecfdf5f08ba1986716ffce6e139973845599523167d26cafd4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x13843 16268 bytes
font_04_sfnt_off00014da9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x14DA9 4324 bytes