Malicious PDF — malware analysis report

Static analysis result for SHA-256 a44fc14e886f3852…

MALICIOUS

PDF

43.7 KB Created: 2020-05-15 11:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b504f144ebb4416bfb8b2c4ca1152b24 SHA-1: 46cc60797f4dc80cb09eec26bf3aee7cd33970b4 SHA-256: a44fc14e886f3852cc1972e8181fde6041e0c139fc8caa7a98ed5e2e8d4da1a8
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting it is part of a link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs point to various PDF files hosted on different domains, likely intended to distribute further malicious content or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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
  • 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://wkndvan.life/uploads/1/3/0/8/130814397/130814397.html#freeport+fluke+fishing+report
    • http://bowlingac.com/uploads/1/3/0/2/130289496/zupusa.pdf
    • http://ajochinger.org/uploads/1/3/1/4/131437317/cfd2aa13a8.pdf
    • http://gideertech.com/uploads/1/3/0/4/130488779/c37920.pdf
    • http://thequickenloanspartnership.com/uploads/1/3/1/3/131381946/gagiwifofe_miwenafur.pdf
    • http://jubilateworship.com/uploads/1/3/0/8/130873983/71e3b511.pdf
    • http://bladelifeextender.com/uploads/1/3/0/2/130287815/fccc8b9a.pdf
    • http://foundations-europe.de/uploads/1/3/0/4/130435666/fafozejosarerukemi.pdf
    • http://aecnwa.com/uploads/1/3/1/6/131636698/vajesavozilimofa.pdf
    • http://cinescapedynamics.net/uploads/1/3/0/5/130543353/lewijejatis-momofisalana-fofexamipevuvis-verudatelek.pdf
    • http://lagodelrey.com/uploads/1/3/1/4/131407281/8d999adf7.pdf
    • http://citygatecorp.com/uploads/1/3/0/3/130313113/kadabavijirin_refawuxuvalasuj_kuvega_mogibufe.pdf
    • http://vipercomputerservice.com/uploads/1/3/1/4/131454383/9197769.pdf
    • http://theartprojectjc.com/uploads/1/3/1/4/131454492/9143289.pdf
    • http://quant-insights.com/uploads/1/3/0/5/130551229/wevuwara.pdf
    • http://ccprofessionaltaxservices.net/uploads/1/3/0/7/130740265/3542017.pdf
    • http://turtlebaycommunity.com/uploads/1/3/0/8/130814133/bebaja.pdf
    • http://eureka.rocks/uploads/1/3/0/6/130603860/gasozajikobu.pdf
    • http://carsonalliance.com/uploads/1/3/0/3/130313445/mipobireki_xilale_kujukikurak_domaxanimemef.pdf
    • http://clutterandcharm.com/uploads/1/3/0/5/130545421/baa1c39a46c09.pdf
    • http://fairyhairwear.com/uploads/1/3/0/6/130620690/viguvojev-vusageduzezowov-jusep-sojukaf.pdf
    • http://fromtheheartliving.com/uploads/1/3/1/3/131379031/belizera-mogoguw-ronusesog-livepebazijuk.pdf
    • http://megavalleymc.org/uploads/1/3/0/2/130270872/sopixoz_woletidafomu_xufevovozalip_jemizoji.pdf
    • http://ontheballdogtrainingnj.net/uploads/1/3/0/2/130291029/piferofafuw-fasixazeloses.pdf
    • http://biggdoggexpress.org/uploads/1/3/1/3/131384605/c7a42.pdf
    • http://biggdoggexpress.org/uplo
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006900.bin
b649bdf688ee0ee9e0affba3852983b327cf4bfe1bb497d74125e55293918205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6900 10236 bytes
font_01_sfnt_off00008c3f.bin
8b4fa00e00e2a0ee8d85bca6457fc2559292ad50824e41c4b10acb6064603e30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3F 16676 bytes

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