Malicious PDF — malware analysis report

Static analysis result for SHA-256 2934414dfb544fd6…

MALICIOUS

PDF

120.1 KB Created: 2020-04-02 08:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 52983bc1d10153287d884bdcd9835318 SHA-1: b354007288784f7ebc10aebfc4df983198121502 SHA-256: 2934414dfb544fd678a22890df3f80ad9f107d7ec0a27c76559a467539334190
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains, indicating a link farm or SEO spam operation. The document body, though heavily obfuscated, contains text related to 'Educacion primaria en mexico' and references wkhtmltopdf, suggesting a lure to educational content. The heuristic PDF_SEO_LINK_FARM strongly suggests this is a malicious link farm designed to drive traffic or potentially host malicious content. No scripts were extracted from this sample.

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://sdrvowners.org/uploads/1/3/0/8/130873861/130873861.html#educacion+primaria+en+mexico PDF link annotation
    • http://pureunfoldment.com/uploads/1/3/0/4/130476122/zetudejofigabomok.pdfIn PDF document text
    • http://abcwholesale.net/uploads/1/3/0/7/130740450/dadaliwob.pdfIn PDF document text
    • http://akhal-tekeperformance.com/uploads/1/3/0/3/130323573/f5c431297.pdfIn PDF document text
    • http://global-interactions.online/uploads/1/3/0/4/130489776/pevikovapawepadazis.pdfIn PDF document text
    • http://thepurplestore.net/uploads/1/3/0/7/130739371/8e37445ac79f6.pdfIn PDF document text
    • http://plie-boutique.com/uploads/1/3/1/3/131383764/20fa3855bb5.pdfIn PDF document text
    • http://selfie-sage.com/uploads/1/3/0/4/130483819/b891d702e27.pdfIn PDF document text
    • http://supportivestrength.org/uploads/1/3/0/6/130604561/a0ef88bbacbb2.pdfIn PDF document text
    • http://stringlineconstruction.org/uploads/1/3/0/4/130435826/vuzarajamagasapok.pdfIn PDF document text
    • http://vitalerie.org/uploads/1/3/0/7/130739456/9006552.pdfIn PDF document text
    • http://redleafcomics.com/uploads/1/3/1/4/131406077/6748860.pdfIn PDF document text
    • http://heckanet.com/uploads/1/3/0/6/130620865/c4a1c8073b.pdfIn PDF document text
    • http://mrsdawson-classroom.com/uploads/1/3/0/4/130478244/sisivamovoletub_rajanonisonise.pdfIn PDF document text
    • http://precisionmedspajax.com/uploads/1/3/0/7/130776573/2038538.pdfIn PDF document text
    • http://travelinghousemousecreations.com/uploads/1/3/0/2/130289729/duvelote.pdfIn PDF document text
    • http://beachhouse66.com/uploads/1/3/0/6/130620698/faef5b.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: stringlineconstruction.org 3 samples

Related samples 8

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_off00018da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DA9 10284 bytes
SHA-256: 8b5bd1aebcd7cf93f0fb5bc415b82451ade4c479e730f1e1763a0da9f202a879
font_01_sfnt_off0001b220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B220 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
font_02_sfnt_off0001bb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB87 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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