Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f010de02d9922df…

MALICIOUS

PDF

46.0 KB Created: 2020-04-01 15:16:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 251bc8db15cc90f5cf9765535800a2b9 SHA-1: e3975cc749fa3469b639c893aef5c2157b1429cb SHA-256: 7f010de02d9922dff8d29d62aeb88081f574722f791586c03adbb72c9c7623c3
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm or SEO spam, embedding a large number of external URLs. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 20 external links, suggesting an attempt to manipulate search engine rankings or direct traffic to potentially malicious sites. While no scripts were directly extracted, the embedded URLs themselves are the primary indicators of malicious intent, likely serving as lures or downloaders.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 http://homesbyesthermillieramos.com/uploads/1/3/0/4/130476141/130476141.html#rick+steves+paris+hotels+2017 PDF link annotation
    • http://freeteacher.org/uploads/1/3/0/6/130620819/347207c857235d.pdfIn PDF document text
    • http://satzkom.com/uploads/1/3/1/0/131070178/zafobomejimuvuk.pdfIn PDF document text
    • http://reliablecontgrp.com/uploads/1/3/1/3/131383645/b332e1c407.pdfIn PDF document text
    • http://meditationconsciousness.info/uploads/1/3/1/3/131381332/6613e94dc1b.pdfIn PDF document text
    • http://enlightenedastrologycourse.com/uploads/1/3/0/5/130588747/ketopi_pogivila.pdfIn PDF document text
    • http://milenatensaye.com/uploads/1/3/0/7/130776069/sarirefovuled_rujusa.pdfIn PDF document text
    • http://crossboxinternational.com/uploads/1/3/0/5/130590462/4529604.pdfIn PDF document text
    • http://barbandcarl.com/uploads/1/3/0/3/130313179/8015065.pdfIn PDF document text
    • http://flyingowlexhibitions.com/uploads/1/3/0/8/130815192/fosekimon-faxegenejuti.pdfIn PDF document text
    • http://emf2.org/uploads/1/3/0/2/130289317/xadepusoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: flyingowlexhibitions.com 8 samples

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7B 9492 bytes
SHA-256: 080719eaa58001a8946a3bf97a16246016ea21d2e9e12b0619c064c45a685b98
font_01_sfnt_off00008cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC9 2600 bytes
SHA-256: 7466f12abaaa7f3061b2eee0fbea2aff938e674d3fe107531bc2e00f9f0dfbcf
font_02_sfnt_off000095f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F4 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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