Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c9ca508defb9d71…

MALICIOUS

PDF

68.6 KB Created: 2021-03-05 09:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2476caf3f46a601b54d732a4290046d0 SHA-1: 61aeef26ef8f83623db5456ab9dc48c87581dfcf SHA-256: 1c9ca508defb9d712cb478f66e5ec1fbb31dfdd42e2b8b6ba7e6cccbc87be28c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=ryobi+weed+eater+ry253ss+manual PDF link annotation
    • http://jinevul.mygamesonline.org/juxowo.pdfIn PDF document text
    • https://lapebezufidasaz.weebly.com/uploads/1/3/4/3/134316617/kinolokoduwase.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5ffcb255ab8e7.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/jio_mobile_video_calling_baat_karne_wala_apps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376601/normal_6034250276313.pdfIn PDF document text
    • https://xemegejimeje.weebly.com/uploads/1/3/1/6/131636808/9888107.pdfIn PDF document text
    • http://vumamanepu.sportsontheweb.net/how_to_sell_nascar_collectibles.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://92e0cadd-ca3c-497d-ba7d-1aece6ee6da0.filesusr.com/ugd/008e52_80cbc16523c449f99d223cf31d6f3ef1.pdf?index=trueIn PDF document text
    • https://bd15da75-ee01-4ad3-8b22-4778d9929f37.filesusr.com/ugd/1abc29_f933206577ef401e9028d3cd4d992ab2.pdf?index=trueIn PDF document text
    • http://xakagigoneliv.myartsonline.com/the_cat_in_the_hat_knows_a_lot_about_that_episodes_wiki.pdfIn PDF document text
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_77c570e669da46ab893fbc567ade391d.pdf?index=trueIn PDF document text
    • https://0c2a99dd-71fd-4a0d-b96f-672cfa785c21.filesusr.com/ugd/515c54_e0f660e9e3cc410a89bed135f6628263.pdf?index=trueIn PDF document text
    • https://c7f0abc7-d23b-482d-bd16-0771495bb668.filesusr.com/ugd/bb13a2_24df73e654004c8eb0a40d8841ff7318.pdf?index=trueIn PDF document text
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_e65ce3ff68744a139bf7f6546b6b790e.pdf?index=trueIn PDF document text
    • https://59548cc9-d6a6-4b2e-bd73-2bfb7290c7b5.filesusr.com/ugd/3fd21f_eae5c7509d1d46f4b85c3eba54b1739d.pdf?index=trueIn PDF document text
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_0f3027da537c463f9bc923dbe28e9de9.pdf?index=trueIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_5048cdbf7eb643b5acf523192427ba1e.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_off0000ce24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE24 5732 bytes
SHA-256: 7ae7a53237aeae7c5dd266befdec8d4c3190e9cbde094bc8e971ffc76faa70bf
font_01_sfnt_off0000e1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AE 10500 bytes
SHA-256: e6dfc3e6f8da762a1ee6111c966d735bdd8666093b0465d877e1237b132ed7a9

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