Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba00866dc6ffda16…

MALICIOUS

PDF

86.2 KB Created: 2021-02-18 22:36:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ae03650aec0ed7a456f81b0cc5400cd SHA-1: 5c0dd7b7b50d48ae16600d6510ea6c4239c5dbb4 SHA-256: ba00866dc6ffda1685114b6b1d44467841ce04759f2c01a887dd960e97329f7b
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, characteristic of a link farm or SEO scam. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to deceive users with promises of prizes or funds, combined with delivery requirements. While no scripts were explicitly extracted, the presence of numerous external URLs suggests a potential for downloading further malicious content or redirecting to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/wix?keyword=crack+the+core+exam+pdf
    • http://bestita.space/star_trek_fleet_command_discovery_missions_locationsd4zpu.pdf
    • https://cdn-cms.f-static.net/uploads/4422877/normal_602985e7ad0b1.pdf
    • https://static.s123-cdn-static.com/uploads/4383695/normal_6008ea08d8040.pdf
    • https://kobuzonoge.weebly.com/uploads/1/3/1/4/131452837/5436279.pdf
    • http://1eyvgo.xyz/87413453693eq1gv.pdf
    • https://static.s123-cdn-static.com/uploads/4474727/normal_5ff0238c1283d.pdf
    • https://cdn-cms.f-static.net/uploads/4460266/normal_60238e27823f9.pdf
    • https://zitavuzan.weebly.com/uploads/1/3/1/3/131379524/wijunaf_wenajona_nijekiven_zedutikipibe.pdf
    • https://cdn-cms.f-static.net/uploads/4489251/normal_602799eda2ee2.pdf
    • http://shopee24.site/accrued_expenses_affect_on_the_balance_sheet09pw2.pdf
    • https://kimilofu.weebly.com/uploads/1/3/0/8/130873947/104575.pdf
    • https://raminatu.weebly.com/uploads/1/3/4/5/134579417/jagukudil.pdf
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/5d230d6b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://katanitape.rf.gd/angola_business_visa_application_form.pdf
    • http://gejaxogepokotow.rf.gd/94184057727.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011541.bin
bd7a0c8bfe28d1aa299b09e8dd65bfe64dfe19d879fafd3b3ac0e9beb50b9040
pdf-font-stream PDF embedded font (sfnt) at offset 0x11541 5220 bytes
font_01_sfnt_off000126de.bin
c38a64c971ddacd17b0fcea7c5dc94b4ef241f0362cfbbc870bbb88e5c61e0da
pdf-font-stream PDF embedded font (sfnt) at offset 0x126DE 10720 bytes