Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb31cb528ecc2f4…

MALICIOUS

PDF

87.5 KB Created: 2021-05-02 08:36:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 133ac54ea2dcc7edd7f620ad1e9e5de1 SHA-1: 1df8ddeec149a2d655cddd239b3a0f785c6bb635 SHA-256: 2fb31cb528ecc2f49c099fff0fb9f8e8adaddfc6bceab6084899145ff91e211c
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to food ingredients, a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=chick+fil+a+spicy+chicken+strips+ingredients PDF link annotation
    • https://cdn.sqhk.co/jememobak/g5ghgso/zedadifoz.pdfIn PDF document text
    • http://nipuxikupiluzep.iblogger.org/asthma_action_plan_rch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_605c0605a47b2.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/kala_patthar_movie_amitabh_bachchan.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/jgijjje/vaparejaxunogapaxif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420617/normal_605dbb066f015.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497359/normal_5fcabf37ac972.pdfIn PDF document text
    • https://cdn.sqhk.co/daxegajok/cijQghg/76238884485.pdfIn PDF document text
    • http://vivuwolijerina.iblogger.org/augmented_reality_android_tutorial.pdfIn PDF document text
    • http://bivozebavi.iblogger.org/65449209992.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/xoxabofebazumazafodebobe.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/vuterijoze/33576356052.pdfIn PDF document text
    • http://vokoribosid.rf.gd/lofedotugeruginepagajofo.pdfIn PDF document text
    • http://bexumonege.rf.gd/cultivation_of_bt_cotton_project.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/function_app_arm_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/vaxotafawo.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/sujatibonito.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/dell_precision_m4600_i7_specs.pdfIn PDF document text
    • http://vifoxakusawe.rf.gd/tekevikutelo.pdfIn PDF document text
    • http://pufaxutunipoja.epizy.com/25524789559.pdfIn PDF document text
    • http://fipepazis.epizy.com/medegazizirewulavapasep.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B9 6864 bytes
SHA-256: a65706f2a23067d2b7412b19c8414c0acef48b610e64555c17983a6d9b835da0
font_01_sfnt_off00010912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10912 5488 bytes
SHA-256: 560fa468f46e2fabc9826e80cc54b0e2d09b397b3188fda89eed9782fcc434c5
font_02_sfnt_off00011bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB9 6172 bytes
SHA-256: 783d9106bd7db6eb31d6992db9c44bb67c87e28c5a519fc01ff82b7e2544166d
font_03_sfnt_off00012808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12808 11724 bytes
SHA-256: 9d147d58e65bfdaeb1e13107ced8a94a83bb6434199bb5a428911a1b1c565dbf

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