Malicious PDF — malware analysis report

Static analysis result for SHA-256 a19a02086fc678fe…

MALICIOUS

PDF

40.0 KB Created: 2020-05-15 19:25:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 985aa1f6ce80335d2efdf04aa5403080 SHA-1: 28244cc80cd6f9bd08e7b6363c75b702134edeba SHA-256: a19a02086fc678fe894508376807ad7d428228a2a0baf9e3123a663f6fe22d83
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, many of which are structured to appear as SEO-friendly PDF documents. The document body mentions 'Bhartiya dak online form 2018', suggesting a lure to trick users into believing it is an official form. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely directing users to malicious content or phishing pages. No scripts were extracted from this sample.

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://emergenwa.org/uploads/1/3/0/2/130289692/130289692.html#bhartiya+dak+online+form+2018 PDF link annotation
    • http://dfaofficial.com/uploads/1/3/0/4/130483863/zumotujekebikobuv.pdfIn PDF document text
    • http://vectorsignminnesota.com/uploads/1/3/0/5/130590391/4503723.pdfIn PDF document text
    • http://newgenerationjewsabundantm.com/uploads/1/3/0/6/130640095/kisobexez_pixewijujasawi_labuf.pdfIn PDF document text
    • http://micheleepstein.com/uploads/1/3/0/9/130968995/jutotubut-golurijedumex-timowezo-moreduwu.pdfIn PDF document text
    • http://nlrtsa.com/uploads/1/3/0/5/130590138/df9b61b19f2.pdfIn PDF document text
    • http://halifaxrealestateblog.net/uploads/1/3/1/3/131384708/9162286.pdfIn PDF document text
    • http://midnightofferings.com/uploads/1/3/0/3/130313158/6847470.pdfIn PDF document text
    • http://powerwindowwizards.com/uploads/1/3/1/4/131455024/d331ccd.pdfIn PDF document text
    • http://tiffanywhiterealestate.com/uploads/1/3/1/3/131378796/8797589.pdfIn PDF document text
    • http://evanschloss.com/uploads/1/3/1/3/131381237/f94fae50f.pdfIn PDF document text
    • http://juliuswilliamsiii.com/uploads/1/3/1/4/131452944/2428525.pdfIn PDF document text
    • http://mglobalsolutions.org/uploads/1/3/1/4/131406739/5620080.pdfIn PDF document text
    • http://dessertwarsmiami.com/uploads/1/3/0/6/130639272/kavubutafukib.pdfIn PDF document text
    • http://dermisdiva.org/uploads/1/3/0/6/130604249/wilot.pdfIn PDF document text
    • http://5cinnovations.com/uploads/1/3/0/3/130313088/gimuxapujagajub.pdfIn PDF document text
    • http://mobilebillboardsoakland.com/uploads/1/3/0/6/130640194/871141.pdfIn PDF document text
    • http://donsmarketemmett.com/uploads/1/3/0/7/130740049/ea3d83679.pdfIn PDF document text
    • http://4windsfarmsd.com/uploads/1/3/1/6/131606597/330d6.pdfIn PDF document text
    • http://ashevillepower.com/uploads/1/3/1/0/131070918/tonajobunega.pdfIn PDF document text
    • http://daphneecuisine.com/uploads/1/3/1/8/131871856/wefasibifubenibuvume.pdfIn PDF document text
    • http://sarahcroce.com/uploads/1/3/0/3/130323377/lodesobi-xovidatebevot-seletuxusasaku-rigowevebuna.pdfIn PDF document text
    • http://goodywest.com/uploads/1/3/0/3/130379465/pevonirumabunabodo.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 2

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_off000070fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FA 10252 bytes
SHA-256: 76c8e518345c86e381437ab211ffedd40040a9a4c916a1798db89c573deb77f5

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