Malicious PDF — malware analysis report

Static analysis result for SHA-256 36419c4f12b5c02a…

MALICIOUS

PDF

33.7 KB Created: 2020-05-15 09:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-10
MD5: 579ec545b02346d846a25673e94e8781 SHA-1: b9e82878a000e121e58d46c1972205d47de1397d SHA-256: 36419c4f12b5c02a9fa5926fc5b5d0904b4300d531614ba5e6b7c4ae78eaf71b
96 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links likely serve to direct users to potentially malicious websites or to engage in SEO spam tactics. The document body, though partially corrupted, contains a reference to an application form, suggesting a lure to encourage interaction with the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://giniac.fr/uploads/1/3/1/8/131871532/131871532.html#apsrtc+cat+card+application+form PDF link annotation
    • http://addictivedecadantmusthaves.com/uploads/1/3/0/5/130588531/xikegoda_fudovesu_gobovux.pdfIn PDF document text
    • http://theroom.club/uploads/1/3/0/2/130274370/487904de6a61923.pdfIn PDF document text
    • http://talkbuddy.org/uploads/1/3/0/8/130873851/1087130.pdfIn PDF document text
    • http://tradeandfinance.it/uploads/1/3/0/2/130289172/xewumimesubabim-melugugapi.pdfIn PDF document text
    • http://thecabinonline.com/uploads/1/3/0/7/130776176/0de6d06aba6.pdfIn PDF document text
    • http://hg-virtual.com/uploads/1/3/0/3/130324234/9083327.pdfIn PDF document text
    • http://allkidsclothes.ca/uploads/1/3/1/4/131483468/3386878.pdfIn PDF document text
    • http://curranttech.co/uploads/1/3/0/5/130590092/254a89642269.pdfIn PDF document text
    • http://pronauticgabon.com/uploads/1/3/1/4/131438267/solizakupove.pdfIn PDF document text
    • http://contadoresemprendedores.com/uploads/1/3/1/3/131380741/5780197.pdfIn PDF document text
    • http://selfstoragedrogheda.com/uploads/1/3/0/6/130604220/4141340.pdfIn PDF document text
    • http://fdfarms.net/uploads/1/3/1/4/131455508/muferiboju_donokewakifuj_gadiled_nututurogeleva.pdfIn PDF document text
    • http://yourscoliosis.com/uploads/1/3/0/3/130313555/7976490.pdfIn PDF document text
    • http://fredhzinkefoliagewoodcarving.com/uploads/1/3/0/2/130289565/1455612.pdfIn PDF document text
    • http://eatsleephockey.org/uploads/1/3/1/4/131408245/xezudumolarupi.pdfIn PDF document text
    • http://thegiversbook.com/uploads/1/3/0/7/130775295/8091687.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

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_off000057e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E5 10436 bytes
SHA-256: d0f5daaa42ac6f782d1cf415d313b814aefe7cf386082de2e7320ce5b5e110b2

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