Malicious PDF — malware analysis report

Static analysis result for SHA-256 5917675060b635fc…

MALICIOUS

PDF

84.3 KB Created: 2021-02-25 12:24:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0635bd9141d1d93707ae1e30095b1820 SHA-1: ef284effdb16aac147ff4f39e48fbbb5f83b265f SHA-256: 5917675060b635fc82a6dde4909a4aadd188b39ede9f65917681bfb1b5addcf9
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains and are flagged as part of a link farm. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to a known malicious redirector. This suggests the document's primary purpose is to direct users to malicious or phishing sites, likely as part of a broader phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://crophysi.ru/strik?utm_term=how+to+read+aviation+charts In PDF document text
    • http://stav-games.ru/modesto_mall_shoe_storesz6auo.pdfIn PDF document text
    • https://noxigizafovezad.weebly.com/uploads/1/3/1/4/131438329/588a3d.pdfIn PDF document text
    • https://rimuzunij.weebly.com/uploads/1/3/4/0/134095873/janezita-rotononak-nojosobaviru-vapig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492278/normal_601471a3c6662.pdfIn PDF document text
    • https://ximizewilaxeju.weebly.com/uploads/1/3/1/3/131381769/wuzepilo-kabasubut-vorebinuvot.pdfIn PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/susube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386084/normal_603618506079b.pdfIn PDF document text
    • http://betflixguvenilirmi.com/ninja_jumping_game_with_voice2tnbk.pdfIn PDF document text
    • https://xutawolovunoka.weebly.com/uploads/1/3/0/7/130739399/ed891ececca1b2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480904/normal_5fcb8fbc8f7bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490930/normal_602926397e135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376629/normal_601489e7820e0.pdfIn PDF document text
    • http://myfirstsite.xyz/2414572970psvod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455881/normal_5ffbb396c0e84.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/arduino_for_mac_os8pnag.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://s3.amazonaws.com/mijumomub/leeds_council_health_and_safety_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/outline_story_worksheet_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/ascertaining_the_class_of_information_in_mis.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/69444096774.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/58168822000.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/nezepiben.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/celebrity_cruises_drink_package.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_off00010160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10160 4896 bytes
SHA-256: 92b1b99568a8e63edbf49b467cf27072043a43ec8fb2bb9432571a4931520801
font_01_sfnt_off0001120a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1120A 10444 bytes
SHA-256: e2e4c2d5e7709d041cfe4cc42f620e81e4dffa17b03f6f5b68dff949d0f09c84
font_02_sfnt_off00013584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13584 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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