Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf989bcb9a18c6a…

MALICIOUS

PDF

44.2 KB Created: 2020-05-15 12:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: c4f16c711d669f3d62923b64847749a4 SHA-1: 7f8f6016cfc6534d17d4b62ca4f8e9d0398de91f SHA-256: faf989bcb9a18c6ae1f55884ee075b88b1320cc998501ac6e7157f15f7997012
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. The ML classifier also strongly indicated maliciousness. The embedded URLs and the document body suggest a lure related to 'Star ocean anamnesis apk jp', likely intended to drive traffic to these linked resources, potentially for SEO manipulation or malware distribution.

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://inessenceherbs.com/uploads/1/3/0/8/130814085/130814085.html#star+ocean+anamnesis+apk+jp PDF link annotation
    • http://cottageonthegreen.ca/uploads/1/3/1/1/131164218/sejotubej.pdfIn PDF document text
    • http://dripzz.com/uploads/1/3/0/2/130272994/soxolozenozol.pdfIn PDF document text
    • http://deltakappanu.com/uploads/1/3/1/4/131453927/4777288.pdfIn PDF document text
    • http://davidtosch.com/uploads/1/3/1/0/131070883/zosulukirugur-doxur-gakelode.pdfIn PDF document text
    • http://amddesign.it/uploads/1/3/1/4/131406541/kivuwixivilone-wuvevetaworom.pdfIn PDF document text
    • http://uniquelysatarus.com/uploads/1/3/1/3/131398046/430070.pdfIn PDF document text
    • http://goldenruleboutique.com/uploads/1/3/1/6/131606325/punowijajowipeg_lexugexawine_nibibozili.pdfIn PDF document text
    • http://janakolpenstudio.com/uploads/1/3/1/0/131069968/winexifuroj.pdfIn PDF document text
    • http://mmwallandcompany.com/uploads/1/3/0/7/130739809/265bce4ffca42.pdfIn PDF document text
    • http://hfhmadison.com/uploads/1/3/0/9/130969757/bifixorefun.pdfIn PDF document text
    • http://psdalton.com/uploads/1/3/0/6/130604872/7c82a6f09.pdfIn PDF document text
    • http://thenextstepridingservices.com/uploads/1/3/0/4/130475877/dusogiloriz_gaxejikuxoromif_giwiruwedesuded.pdfIn PDF document text
    • http://sslandimprovements.com/uploads/1/3/1/8/131871780/694176.pdfIn PDF document text
    • http://sellnanashouse.com/uploads/1/3/0/8/130814286/425b20d48.pdfIn PDF document text
    • http://laurencommunication.com/uploads/1/3/0/7/130775643/d37a713a9e1.pdfIn PDF document text
    • http://toubkalwebtv.net/uploads/1/3/1/6/131607278/95eb1.pdfIn PDF document text
    • http://mayhem-grobbulus.com/uploads/1/3/0/7/130739022/lukugurimedef-rupos-gasipo.pdfIn PDF document text
    • http://seedtheway.org/uploads/1/3/1/6/131636960/28086f.pdfIn PDF document text
    • http://matesradio.com/uploads/1/3/0/6/130603906/misuxezujezolepe.pdfIn PDF document text
    • http://banzaiwraps.com/uploads/1/3/1/1/131163853/xegawi.pdfIn PDF document text
    • http://emergencytreeremoval.org/uploads/1/3/0/2/130270941/be820b8d5.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
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1A 10944 bytes
SHA-256: 61e446c3bd9dcda175575812d919bcee468237a0d5851d6afd21d3e35dc6606b
font_01_sfnt_off00008fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBA 16100 bytes
SHA-256: e70435e2641b3aae6193dfd4edc7942d3948bcb9f116085093c9cc1444ae4351

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