Malicious PDF — malware analysis report

Static analysis result for SHA-256 61ba1a9535f36884…

MALICIOUS

PDF

92.0 KB Authoring application: Poppler-utils First seen: 2020-09-24
MD5: e5ee85ab5c1952357d3aeadda49241b1 SHA-1: b271051e515eeb13dbd6d01d22e7767236adcff7 SHA-256: 61ba1a9535f368842bb18a6ec5f64944dd68287f6cb8391945460fe5646b8adb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The document body itself is largely unreadable due to encoding issues, but the presence of numerous external links is the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://tentmakers.co/uploads/1/3/0/4/130491001/3520358.pdf In PDF document text
    • http://countrymilehotdogs.net/uploads/1/3/0/7/130775118/gejalinovep.pdfIn PDF document text
    • http://swingfun.com/uploads/1/3/0/8/130874066/josis-dulewazamuzeb.pdfIn PDF document text
    • http://glamourebeauty.com/uploads/1/3/0/7/130738830/553784ee865a9.pdfIn PDF document text
    • http://globallutheranoutreach.biz/uploads/1/3/0/6/130620854/daloxadomozupaboxib.pdfIn PDF document text
    • http://ejruek.com/uploads/1/3/0/8/130873843/cfbfc5.pdfIn PDF document text
    • http://myburnsfamily.com/uploads/1/3/0/5/130539637/82a65820917.pdfIn PDF document text
    • http://musicstockphoto.com/uploads/1/3/0/5/130590229/01a5d07d153e30.pdfIn PDF document text
    • http://jackieheere.com/uploads/1/3/0/8/130813979/vubuvefutoxut_julogakisok_luwovotuwopufu.pdfIn PDF document text
    • http://noirnooga.net/uploads/1/3/0/3/130323811/4609583.pdfIn PDF document text
    • http://alfredveretto.com/uploads/1/3/0/6/130621608/tabutevikil.pdfIn PDF document text
    • http://snlgi.com/uploads/1/3/0/6/130639571/947d28a1c1a3934.pdfIn PDF document text
    • http://analyticsforsocialgood.com/uploads/1/3/0/5/130588550/niveravavamixo.pdfIn PDF document text
    • http://antiochmissionarybaptist.org/uploads/1/3/0/8/130813848/5052503.pdfIn PDF document text
    • http://extractvaluenow.com/uploads/1/3/0/2/130291373/6512465.pdfIn PDF document text
    • http://carolinaopticalbluffton.com/uploads/1/3/0/3/130313513/losizuranitasujuz.pdfIn PDF document text
    • http://processly.com/uploads/1/3/0/7/130775228/0634f7756a9.pdfIn PDF document text
    • http://kateforester.com/uploads/1/3/0/5/130551772/4311834.pdfIn PDF document text
    • http://www.masterscookware.com/uploads/1/3/0/2/130289460/3349612.pdfIn PDF document text
    • http://seasonalswap.com/uploads/1/3/0/8/130814729/rotafejo.pdfIn PDF document text
    • http://delbuck.com/uploads/1/3/0/6/130603850/5625946.pdfIn PDF document text
    • http://debudgetheer.nl/uploads/1/3/0/5/130539002/f9291.pdfIn PDF document text
    • http://jy-la.org/uploads/1/3/0/7/130739978/padodakewaf_geluke_poruk_vegex.pdfIn PDF document text
    • http://balkanco.com/uploads/1/3/0/7/130738646/6486970.pdfIn PDF document text
    • http://hvo48.slpny.com/uploads/1/3/0/6/130621682/130621682.html#hindi+font+kruti+dev+keyboard+chartIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000941c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x941C 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
font_01_sfnt_off0000a832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA832 1388 bytes
SHA-256: 1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
font_02_sfnt_off0000b340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB340 20092 bytes
SHA-256: e61de68305cbe0e2bf78d404896e0117bd41255bb6fb35433242f72eed9e0904
font_03_sfnt_off0000eb40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB40 22900 bytes
SHA-256: f0a4bbe5d70dd89e37e961fccc7002a23760ab8a9969b0dcb85bf166cd2220a8

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