Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c09391c0ffae53d…

MALICIOUS

PDF

69.3 KB Created: 2020-12-13 20:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1ddaa868f053eddd095d324fedcf7613 SHA-1: 21824e956908414449bb1c39d6b7e308c6227d30 SHA-256: 1c09391c0ffae53d825389ccb8990da15aadc8f9a7118379bcea0b9ce2ef8a41
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?utm_term=jugs+super+softball+pitching+machine+manual In PDF document text
    • https://xolovimuwoza.weebly.com/uploads/1/3/4/8/134865524/wogozevewazotu_ropekani_nevapebireno_kikalaxej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457854/normal_5fd5fa47aaaa8.pdfIn PDF document text
    • https://gorewexenedi.weebly.com/uploads/1/3/4/5/134585163/dutosisokaxil-dipular.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408461/normal_5f9fce12c68b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc4d62cbdb33045eedb607b/t/5fd1ac388ba64b78df530023/1607576639849/best_trucker_lite_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/glioblastoma_multiforme_stage_4_survival_rate.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9eb3398ff75152e2002/t/5fd0fc8a13bd9e60fd768d0c/1607531658244/58106868452.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/litiguvemipepegopa.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/boston_bruins_printable_schedule_2018-_19.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/frankenstein_graphic_novel_original_text.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/super_bluetooth_hacker_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bullet_journal_weekly_spread.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27e0b2cf09257bd761280/t/5fc49579f81c9a2a0c346ed4/1606718841768/5398671166.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/chinese_animation_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/2064437668.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40A 5440 bytes
SHA-256: d5d9937583208a1a9c5e929f879982c6641879cb1b3f206e56d9298e287098bf
font_01_sfnt_off0000d65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65A 10500 bytes
SHA-256: e25a6db9d0628e39303f3b139ded25eb3dade095e7452c92fb9bf1fbbf61a2da
font_02_sfnt_off0000fa2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.