Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bf4d597c36bb198…

MALICIOUS

PDF

39.6 KB Created: 2020-03-09 08:11:33 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 69544017690a2aecccb9ea72953deb42 SHA-1: 5978e2c556de8817300d497eba81c3b3afc1e032 SHA-256: 8bf4d597c36bb1983edd4dcba3e094d2c14095892ce02337b1ecbec01070bbc9
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a PDF SEO link farm. The document body, though heavily obfuscated, contains references to URLs that are likely part of this link farm. This technique is often used to manipulate search engine rankings or to distribute malicious payloads via seemingly innocuous links.

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://london-office-2.pleasingfood.com/uploads/1/3/0/4/130483238/130483238.html#impact+of+plastic+pollution+on+environment PDF link annotation
    • http://taocostarica.com/uploads/1/3/0/6/130621798/9342949.pdfIn PDF document text
    • http://webmail.shamushaws.com/uploads/1/3/0/4/130488469/1572088.pdfIn PDF document text
    • http://createprinting.com/uploads/1/3/0/7/130738831/ninofimixemuko.pdfIn PDF document text
    • http://zoescopestudio.com/uploads/1/3/0/2/130289530/tikesozijerupaz.pdfIn PDF document text
    • http://makrworld.com/uploads/1/3/0/4/130477351/zumidiridupoxi.pdfIn PDF document text
    • http://balonskydancer.net/uploads/1/3/0/6/130621451/bowesugezilidata.pdfIn PDF document text
    • http://www.winecountryreclaimedfurniture.com/uploads/1/3/0/9/130969838/gerifejixotepakixe.pdfIn PDF document text
    • http://www.darklostlovepspells.com/uploads/1/3/0/4/130489841/4bad9bf4e93.pdfIn PDF document text
    • http://nflar.club/uploads/1/3/0/6/130621846/xuvaja-timenurawaj-norowigiponilo.pdfIn PDF document text
    • http://www.mindbodyhealthcoaching.com.au/uploads/1/3/0/6/130605443/bitadakadunomigeweju.pdfIn PDF document text
    • http://lovepeaceandrighteousness.com/uploads/1/3/0/2/130272070/570604b410407a2.pdfIn PDF document text
    • http://www.sensualhealer.com/uploads/1/3/0/3/130323568/wenitiwug_juris_dulexi_risij.pdfIn PDF document text
    • http://accentbrass.com/uploads/1/3/0/4/130483364/larajunutisamob_muguterare_kisezanaw_zipinupaxabera.pdfIn PDF document text
    • http://hostmaster.eclmediation.co.uk/uploads/1/3/0/6/130621005/aa165bbbcde7.pdfIn PDF document text
    • http://www.rdlsarms.com/uploads/1/3/0/3/130379351/cd9bb46.pdfIn PDF document text
    • http://learninator.net/uploads/1/3/0/7/130739048/4788461.pdfIn PDF document text
    • http://acutabovelawncare.org/uploads/1/3/0/4/130477135/3b9bb139cc.pdfIn PDF document text
    • http://melangeemporium.com/uploads/1/3/0/7/130776102/a0f53d55ba1e2.pdfIn PDF document text
    • http://andrewmckelvey.com/uploads/1/3/0/2/130287727/74630726b063.pdfIn PDF document text
    • http://kilatravels.com/uploads/1/3/0/5/130588849/popizuka.pdfIn PDF document text
    • http://mrgrantmath.com/uploads/1/3/0/5/130539229/3261451.pdfIn PDF document text
    • http://www.janetkwantes-formotionotion.com/uploads/1/3/0/4/130435561/40927e3b5f6.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7411 7320 bytes
SHA-256: 0a2070655c647c75515bfa82338953adaf38abfcdaeb6703e13a160fd5970d03

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