Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39bbfbd1c3f8663…

MALICIOUS

PDF

37.3 KB Created: 2020-03-29 15:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 51338db94939a1ae91bc6a5cc4d527a7 SHA-1: 2b63ecaba4cbc69184372a00dd6a8248cf91f2b7 SHA-256: e39bbfbd1c3f86630a0a12f6eda13fb46486bd7b05794d7555cffb17aaf27b42
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains references to product pricing and metadata from wkhtmltopdf, indicating it is likely a lure to entice users to click on the embedded URLs. These URLs lead to various PDF files hosted on different domains, likely serving as a distribution mechanism for further malicious content.

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://princess-crown.lucky1st.com/uploads/1/3/1/4/131438046/131438046.html#citizen+eco+drive+e870+price PDF link annotation
    • http://minimelism.com/uploads/1/3/0/6/130639593/xajapowiguwepuma.pdfIn PDF document text
    • http://orlandoaccidentlawyer.net/uploads/1/3/0/9/130969931/vudogaravusef.pdfIn PDF document text
    • http://nyreeshawilliams.com/uploads/1/3/0/3/130313605/vazomavubuj.pdfIn PDF document text
    • http://astopintime.net/uploads/1/3/0/6/130639263/zuwepesuza-makatubo.pdfIn PDF document text
    • http://gretajohn.com/uploads/1/3/0/7/130738950/f384e7b3f3cb7.pdfIn PDF document text
    • http://mgtowtv.com/uploads/1/3/0/3/130323517/pujeza-xodivo-daxubebitole.pdfIn PDF document text
    • http://riosilvano.com/uploads/1/3/0/6/130622116/butitofosaduno-mowowiwoseru.pdfIn PDF document text
    • http://50millisecond.com/uploads/1/3/0/7/130740187/liwetemopenadel.pdfIn PDF document text
    • http://scimathschool.com/uploads/1/3/0/4/130476499/5768194.pdfIn PDF document text
    • http://margaretnisbet.com/uploads/1/3/0/7/130739101/bixesirivagapa.pdfIn PDF document text
    • http://financialeconomist.net/uploads/1/3/0/7/130739615/5516262.pdfIn PDF document text
    • http://tandlakaremartin.com/uploads/1/3/0/6/130639701/321691eccaf849d.pdfIn PDF document text
    • http://orbarefootmassagetraining.com/uploads/1/3/0/3/130313360/bekusovenitebugibu.pdfIn PDF document text
    • http://rent2own.today/uploads/1/3/0/2/130273743/bfac1a5afeabe65.pdfIn PDF document text
    • http://comarugavips.com/uploads/1/3/0/4/130476688/2389153.pdfIn PDF document text
    • http://katakekedi.com/uploads/1/3/0/5/130544702/xugoguri-xiwefexugega-sagojokafonopu.pdfIn PDF document text
    • http://girlcodeinc.com/uploads/1/3/0/6/130603825/gutolosobin_rozowelireter_vogik.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
    • http://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn 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_off00005f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 6924 bytes
SHA-256: ed7b761b8cd84562b07fc1b36a80cbed08a940f4d47d82e0573162c6bd5714fb
font_01_sfnt_off00007a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A96 4196 bytes
SHA-256: 16374c43fefb3fb406266acbe16aee7d7122405634c1b68ba02c6c95ae4378ce

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