Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe8d4f6b029a446…

MALICIOUS

PDF

77.2 KB Created: 2021-05-15 02:37:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 434a0bf6ea5a609f61be62de30355b21 SHA-1: 2329cf1ec39b48082252ef247755806a2a73666d SHA-256: cbe8d4f6b029a446edb9521dd2c12160aed7a12bfe8605d239c4b4749613f88b
196 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent link pointing to 'https://botokaw.ru/strik?utm_term=how+do+i+connect+my+cricut+joy+to+my+computer', which is flagged as an SEO redirector likely used for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to connecting a device, further supporting a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/strik?utm_term=how+do+i+connect+my+cricut+joy+to+my+computer PDF link annotation
    • http://xepelewatelaziv.getenjoyment.net/ion_max_lp_usb_turntable_with_integrated_speakers_review.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/iek9FEt/6312735497.pdfIn PDF document text
    • http://xalowazejadiv.getenjoyment.net/nubolumenivubosowekoli.pdfIn PDF document text
    • https://cdn.sqhk.co/ketifoseja/ig8ceoJ/best_light_meter_for_plants.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/zisamolopijobemepamojomi.pdfIn PDF document text
    • http://foramodosug.mygamesonline.org/walt_whitman_calamus.pdfIn PDF document text
    • https://mubatizusilaboj.weebly.com/uploads/1/3/4/4/134475350/monimukeresonigelome.pdfIn PDF document text
    • https://cdn.sqhk.co/sivunukiwe/cgiSgiL/spirit_halloween_coupon_2020_store.pdfIn PDF document text
    • https://nawodovifuvobix.weebly.com/uploads/1/3/0/9/130969758/7334e.pdfIn PDF document text
    • http://jenewazajasazu.getenjoyment.net/types_of_enzyme_inhibitors.pdfIn PDF document text
    • http://nunobuzipame.medianewsonline.com/how_to_graph_linear_equations_in_slope_intercept_form.pdfIn PDF document text
    • http://miwasigal.mywebcommunity.org/python_coding_for_beginners_book.pdfIn PDF document text
    • http://fofolep.mywebcommunity.org/sowesadumeripibugok.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/kovilowab/lazowadubev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd4ecab6-a481-47fe-a923-83c62cccf99d/xawozonigotofu.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/16867184629.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/how_much_are_electrolux_vacuums.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/commerce_department_steel_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/woxuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51e1497c-2d1d-49f3-bbc4-6fe1e20ce3ca/vogowotirob.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF217 5032 bytes
SHA-256: fbff16c8ef2cb95ae688c3e5a74fdd2860e644e03b42f3771f148a89b20401fa
font_01_sfnt_off00010335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10335 10552 bytes
SHA-256: f79a10656134c90e8e82bd679f957416cbf997bb93f1d672f6c3814b7ec8bea6