Malicious PDF — malware analysis report

Static analysis result for SHA-256 8600a45cf7081797…

MALICIOUS

PDF

51.6 KB Created: 2020-10-28 20:47:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6f2fd52e0fdda0eb2a3081fc35faf523 SHA-1: 34d4f12f4d2d585141131900f73faeca1393ffad SHA-256: 8600a45cf7081797a1255167ff419469d82125c90402fa85c0da9e8abe56221b
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to disposable hosting and redirect to known malicious infrastructure. The primary malicious URL identified is https://cctraff.ru/123?keyword=minecraft+better+than+wolves+mod+wiki, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to a Minecraft mod wiki, likely intended to trick users into clicking the malicious links. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/123?keyword=minecraft+better+than+wolves+mod+wiki In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5f8e6ce101292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_5f880fe82b9ac.pdfIn PDF document text
    • https://dowamiwimeguv.weebly.com/uploads/1/3/0/7/130775936/nazupipesixi.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/2344732.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f87d5ab44ee9.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/puzezowapijewaduk.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/2449080.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/kanesawipe-dirom-pokatakowudidev.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/d6dd3435beaac.pdfIn PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/a3dff3e1c.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/c91378c2ea6d6c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374540/normal_5f89e778d8d7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_5f93566a8d5a9.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/138303.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/1d22af8a-9b70-443c-86d0-8d68f5836b1d/kenwood_ts-850sat_review.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/19644273965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fbea1f1-335b-437c-912f-8e95b8b02fe5/36438407553.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/27054389380.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/online_english_speaking_course_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/81583183006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1478/1631/files/jobilepewiser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a1e1293-1bc3-4383-b6e0-73a4fddde831/louisiana_woman_mississippi_man_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/banana_panama_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3574/5176/files/bashed_patch_new_vegas.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_off000086e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E4 5620 bytes
SHA-256: 2ebbb62e6f605da345a01a721b603e33f807dd525c20bf132f55798664eb0749
font_01_sfnt_off000099f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F9 11248 bytes
SHA-256: 89235f286ea2ff5b92400d054616a35f2322de499ec534ca0f4d3f2fe312812f

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