Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce10e1c7b75c378…

MALICIOUS

PDF

37.5 KB Created: 2020-04-06 15:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1d1e7419bd230df83bbd584442f1404a SHA-1: b84ac266fb217aba6977d01b66ad980114fd6121 SHA-256: cce10e1c7b75c378eeed6cba64fafa4838fc28cec3c42aa8da4c90a9239f7620
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO poisoning tactic, designed to drive traffic or potentially distribute further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, limiting the analysis of direct payload execution.

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://bettermepublishing.com/uploads/1/3/0/3/130313346/130313346.html#bilateral+dry+eye+syndrome+icd+10
    • http://716care.com/uploads/1/3/0/9/130969235/timebakugojomuduj.pdf
    • http://steelmagnoliahandcrafted.com/uploads/1/3/0/7/130775587/xogojuzadifuwimuvan.pdf
    • http://coastalinspro.com/uploads/1/3/1/3/131382257/3595349.pdf
    • http://thelearningaddiction.com/uploads/1/3/0/8/130813528/ruvipareko_gotusim_kizazisajew.pdf
    • http://marlive.mobi/uploads/1/3/0/3/130379711/a9f40.pdf
    • http://naturalqueenstudios.com/uploads/1/3/0/4/130476943/wigavukutemap-fifebetil-bepaze-zalawefoko.pdf
    • http://themestream.org/uploads/1/3/1/4/131453535/kajogurizezo.pdf
    • http://lesbutineusesdemarcoux.com/uploads/1/3/0/6/130604536/7316809.pdf
    • http://cecoxjr.com/uploads/1/3/0/8/130873851/mewoligavagifanifoj.pdf
    • http://stevesurname.com/uploads/1/3/1/1/131163752/f282c409.pdf
    • http://kamalasnectar.net/uploads/1/3/0/4/130436020/tezofuv_nazoxu_zibarivufab_zoner.pdf
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067bb.bin
3500a20caee41cc1afc47f1669c63680193cd7516da29e183a65e28185faff5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BB 8316 bytes

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