Malicious PDF — malware analysis report

Static analysis result for SHA-256 164d9d33d20bfc21…

MALICIOUS

PDF

72.5 KB Created: 2021-03-09 08:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: a983f39eae2a807e4fcbf71071a82cc2 SHA-1: 2ffeb70c265f753fa3129215443e0199dbc81aa9 SHA-256: 164d9d33d20bfc21bbee2f7e7554157c8f763ed1d81dcdabbd885461cad26318
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/award?keyword=gazeta+rumska+pdf PDF link annotation
    • https://gilaxaled.weebly.com/uploads/1/3/1/4/131438091/kazepupedebowe_jirilanox.pdfIn PDF document text
    • http://dajexori.mypressonline.com/velejovog.pdfIn PDF document text
    • https://lajonomopizu.weebly.com/uploads/1/3/0/7/130739457/7928180.pdfIn PDF document text
    • http://jolixasij.sportsontheweb.net/which_detergent_is_best_for_front_load_washing_machine.pdfIn PDF document text
    • https://xasirazabad.weebly.com/uploads/1/3/4/6/134699738/530b3b3664b.pdfIn PDF document text
    • https://lawepisofav.weebly.com/uploads/1/3/4/4/134473025/5993457.pdfIn PDF document text
    • https://forijadezututeg.weebly.com/uploads/1/3/0/8/130813765/jukag_navew.pdfIn PDF document text
    • https://votozugilom.weebly.com/uploads/1/3/1/0/131071295/zasefidefe.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/bogiselosaburajapano.pdfIn PDF document text
    • https://witabavuwimob.weebly.com/uploads/1/3/4/3/134339013/dagekojezam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://japinoxizidunub.myartsonline.com/graco_nautilus_snuglock_dlx_3-in-1_harness_booster_in_apollo.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/sorixunaxifasid.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/85513553725.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/53280237350.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/previous_employment_history_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/canto_ya_no_eres_pan_y_vino_letra_y_acordes.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/c_programming_for_dummies_2nd_edition.pdfIn PDF document text
    • http://jowawaba.atwebpages.com/the_crc_encyclopedia_of_mathematics_third_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/indian_wedding_invitation_card_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/basic_mathematics_geometry_formulas.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/butolo.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/kenmore_elite_oasis_washer_canyon_capacity.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDD 5300 bytes
SHA-256: b70ec858abfa8551bb736c6aaa487e1bcc18e3bb74b88029caaf259a5d67549c
font_01_sfnt_off0000f1e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E1 10204 bytes
SHA-256: d42c3f4e0296bf253c77846c5d4a0f9f47b8e9073474b1305fe85ad8c1f5272d

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