Malicious PDF — malware analysis report

Static analysis result for SHA-256 759f08566d4ce7ff…

MALICIOUS

PDF

39.6 KB Created: 2020-10-29 06:23:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1a61b7508bc60442614bb7f560278621 SHA-1: 2bea23dd811e71b1575f034068564e105c08ad23 SHA-256: 759f08566d4ce7fffc77d433666fd39e5a46ab4af36207d4d0c58f41204c12e9
162 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.cc/pify?keyword=ics+201+fillable+word In PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/zifofiritewekasul.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/3753658.pdfIn PDF document text
    • https://rofuvawe.weebly.com/uploads/1/3/4/3/134363923/1515efbba1c92.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zuvefusu_tewojawowebav.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/18b3dc9062.pdfIn PDF document text
    • https://munerotilaxamo.weebly.com/uploads/1/3/4/4/134476206/gazefawemujazab-nogebiwugukel-kasutujatuxuk.pdfIn PDF document text
    • https://sevivuninuk.weebly.com/uploads/1/3/4/4/134459749/2927396.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/vinoveni.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/pozutetutonebuj_kabuwivoxani_wokaw_beziwi.pdfIn PDF document text
    • https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/73d8f41c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0990/0183/files/webelos_adventure_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/horizon_walker_5e_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0557/4311/files/postgresql_9_administration_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2620/0734/files/25377577666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/famisafe_location_tracking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4853/1635/files/bejuwum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7073/2456/files/fnaf_sister_location_apk_mirror.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/85185987247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6120/6422/files/9829253123.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/12343505102.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/lurobivujibewav.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/cantares_mexicanos_unam.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_off000058b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58B6 5512 bytes
SHA-256: ba3bb0fbe84b1da57870d2d1a5064789d8644b47c68c8319e1db08618669cfa5
font_01_sfnt_off00006b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9D 11148 bytes
SHA-256: eba5dbf752e3e762107158c5137af024c4b7860beb04f10c63f5ed730a03e2c4

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