Malicious PDF — malware analysis report

Static analysis result for SHA-256 baaff47300f171c5…

MALICIOUS

PDF

73.5 KB Created: 2020-12-31 11:23:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e1be6e906a8f092cde509d996a6bd569 SHA-1: 38d1357af358ab1d79940d625ea22566499af712 SHA-256: baaff47300f171c5e1c3ed2075f48af02e1d2b185358afb9e639ede4ee763d7c
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirectors and link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'air hockey table' and 'sports authority', suggesting a lure to disguise the malicious links.

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://traffmen.ru/123?utm_term=easton+air+hockey+table+sports+authority In PDF document text
    • https://cdn.sqhk.co/jokutevek/mXgfjg8/boney_the_runner_apk_android.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/linovulov.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/haibhc6/77374095454.pdfIn PDF document text
    • https://cdn.sqhk.co/beluvano/jeiicib/zufejam.pdfIn PDF document text
    • https://cdn.sqhk.co/wekonexiw/fWghWjd/geboxewepugugesubo.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzezajolu/Bge3gdR/cross_wallpaper_iphone_8_original.pdfIn PDF document text
    • https://cdn.sqhk.co/lizupasepafu/icKgjgi/real_racing_3d_download_apk.pdfIn PDF document text
    • https://tanoviruxejalun.weebly.com/uploads/1/3/0/7/130775892/jufedawa_raderisurerege_wagebapomava.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/djbPhgP/ledev.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/Pjgibii/jodobegofomedivupuna.pdfIn PDF document text
    • https://papazutizo.weebly.com/uploads/1/3/4/4/134467207/nepoxuduzudarifiv.pdfIn PDF document text
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/9781a863a7f4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/91598941-5338-48c2-88ff-c6642164cb1f/97774192184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a61616c-7126-4acc-a49f-4535134a3a3b/59690505626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de95eabc-50a4-4005-8bd3-15950a1c1962/saving_francesca_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c71c4231-6ad3-45b3-a320-5f4809cfe105/half_orc_cleric_pathfinder.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_off0000e2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F3 5284 bytes
SHA-256: 9dbd2f4656c233a7166756fe4f871db575e6c425d0874fa8fae2f87e7605b8a0
font_01_sfnt_off0000f4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EE 10556 bytes
SHA-256: a88bf4f07d62c9ff8dc7e6c432344b45c14f33f1e8287cc00aa6b25929eb82d5

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