Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a33d1284053ad7…

MALICIOUS

PDF

64.9 KB Created: 2020-03-07 11:39:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 85dbccdeab3ed73a473218f7d3c77e85 SHA-1: 8989f5e0c8eee544e3d6a0f67e145af0a9bb7d23 SHA-256: c1a33d1284053ad7f1a843994bd97a1451452d55f5496202e6d8b1581d01bda4
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm or SEO scam. The document body, though heavily obfuscated, contains text related to a printable map and references the wkhtmltopdf tool, suggesting a deceptive lure. The primary purpose appears to be directing users to a network of potentially malicious or spam-related websites.

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://74-123-79-160.mgwnet.com/uploads/1/3/0/4/130476514/130476514.html#mapa+f%C3%ADsico+del+mundo+mudo+para+imprimir PDF link annotation
    • http://thelackawaxenmusicfestival.com/uploads/1/3/0/5/130588157/7477127.pdfIn PDF document text
    • http://firedupaboutfitness.com/uploads/1/3/0/3/130313433/a1273f7db40.pdfIn PDF document text
    • http://aguyotte.com/uploads/1/3/0/3/130379332/8990717.pdfIn PDF document text
    • http://turkeyvilla.info/uploads/1/3/0/4/130476563/0ecce0b439.pdfIn PDF document text
    • http://webdisk.hetstillekind.nl/uploads/1/3/0/9/130969804/826333.pdfIn PDF document text
    • http://bandagcint.store/uploads/1/3/0/2/130288329/rutokosaluzuxakod.pdfIn PDF document text
    • http://moongsushi.online/uploads/1/3/0/5/130590763/jugevovafeva-xatefufojim.pdfIn PDF document text
    • http://yessicafandinofiore.com/uploads/1/3/0/2/130289775/80f8e196be.pdfIn PDF document text
    • http://bewellmindset.org/uploads/1/3/0/4/130489467/1426256.pdfIn PDF document text
    • http://nataliewalschots.net/uploads/1/3/0/3/130323552/dogegazeberol.pdfIn PDF document text
    • http://mail.bernagiehelmond.nl/uploads/1/3/0/7/130776229/wipunekofo_sonobok.pdfIn PDF document text
    • http://cmfamilypractice.com/uploads/1/3/0/5/130590368/midaxikudadi.pdfIn PDF document text
    • http://wistem.org/uploads/1/3/0/5/130590380/fibifitoponuluj_dixipizaxax.pdfIn PDF document text
    • http://angrypenguinapps.com/uploads/1/3/0/5/130539697/watipejakurifurubi.pdfIn PDF document text
    • http://jyaphgroup.net/uploads/1/3/0/3/130323930/guxekixa-gefejarone.pdfIn PDF document text
    • http://mail.kascomarine.ca/uploads/1/3/0/2/130289387/rejojo_sepuregulixuxi_fizimarakuvux.pdfIn PDF document text
    • http://1800hurtlaw.com/uploads/1/3/0/2/130272506/zadum_duxosobojitiz_supit.pdfIn PDF document text
    • http://ready2sign.org/uploads/1/3/0/5/130551675/502481.pdfIn PDF document text
    • http://kinderchat.net/uploads/1/3/0/7/130739474/6654353.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA62A 8808 bytes
SHA-256: 4a1ef2ffaa6e810ecea702263305412271402228915964c23f66185af569371d
font_01_sfnt_off0000c5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DA 2600 bytes
SHA-256: 41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee
font_02_sfnt_off0000ceff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEFF 3972 bytes
SHA-256: b8d25675fc030d92b24a06d7f54236cc2ed5fcda5458af208fb78c892415f154
font_03_sfnt_off0000dd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5D 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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