Malicious PDF — malware analysis report

Static analysis result for SHA-256 c625b6506b78b6af…

MALICIOUS

PDF

115.5 KB Created: 2021-01-08 11:56:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 60685d43753b22c850646b28f0d667bc SHA-1: e8303c73360946a372d3ad51bdb65bd228435270 SHA-256: c625b6506b78b6af3bd7e2036f67ce0f6f9c578eca0c8ad087958ded77ffefa9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a 'link farm', suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier strongly indicate this is a phishing or malicious document. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9801

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 https://trafficel.ru/123?utm_term=ww+puffgames+com PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fceb085c011e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5fd60f02ca1be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477147/normal_5fd1f50226d0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419654/normal_5fa9bd64acdfa.pdfIn PDF document text
    • https://rakafofolobe.weebly.com/uploads/1/3/4/6/134649319/zopeli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444369/normal_5feee10abc71c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406463/normal_5fdef66480e28.pdfIn PDF document text
    • https://gofexuzadefedim.weebly.com/uploads/1/3/4/3/134306088/4681091.pdfIn PDF document text
    • https://cdn.sqhk.co/vurifozi/iaaVxpx/giputone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390661/normal_5fd63427bec47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503035/normal_5feea59a415ff.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/zefafinuzilajofofevaz.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.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 11

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00012feb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12FEB 7888 bytes
SHA-256: 365f6c89300c0ef6e09420a8c332e4cd58a94ff3d0e05f6e06ff8d60c1cb785f
font_00_sfnt_off0000d1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A9 3440 bytes
SHA-256: 81fad52a2371d4c1e2fd04fae4e25ce6082550b2e3a8866a51fc0f342720ae23
font_01_sfnt_off0000de31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE31 5312 bytes
SHA-256: 319e78e5fd44a40abba62bdc43049242a01dd643d5b03a13afe8234d664f7aa3
font_02_sfnt_off0000f05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05B 5536 bytes
SHA-256: 537d04f49391576375e6e114e6aa371bbdb656f26c43b2d53895b7c589b85ace
font_03_sfnt_off00010210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10210 4436 bytes
SHA-256: 8e1623c9b2c32d9d2535e8fbf5e43232674f90eb2ebb9e39cdd9399abb276169
font_04_sfnt_off000112a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A0 3948 bytes
SHA-256: 8e65d7e7f9e00643675eb598597786b9f85ff4bb03899b403b31d976126b2e65
font_05_sfnt_off000120ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120FF 4012 bytes
SHA-256: 15c12babf61f6056855ceca85d39d66df5649243aebf653d17980fa321737159
font_07_sfnt_off00014529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14529 5112 bytes
SHA-256: 02e8ca2ae76c824adabb4e1663372ca08703ff6d67f917cc950a9b1ada837665
font_08_sfnt_off0001559f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1559F 16400 bytes
SHA-256: 20e454dcb7debfb2408af0416612d101b7b06a0ee61244dd06c30389a3e34c69
font_09_sfnt_off00018a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A88 21124 bytes
SHA-256: 1f55d3ead40a0c6b2836ea7580efa7dc747f2d3130e6d4b7d9a43b61a367684f
font_10_sfnt_off0001b04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B04D 3520 bytes
SHA-256: 35b18d362e031e127b23c6338ff44b32c1b45a6eaa0bf9e0f9b118bf4ce2c93f

Open this report in the interactive analyzer, or submit your own file for analysis.