Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3a12c9018258cd…

MALICIOUS

PDF

66.6 KB Created: 2020-03-20 05:30:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4111dfd24c4a32ccd927df2c0edbb4f6 SHA-1: 08ba91a2c7808f08253d42c4715936c36a4bcd6b SHA-256: bb3a12c9018258cdd4be661c87c55c65744ec2720431367d60a7a75e4554fa0f
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a PDF link farm. The document body text is a lure, presenting itself as literary content to mask the malicious intent. The primary heuristic indicates the sample is designed to redirect users to a network of linked PDF files hosted on various domains, likely for SEO manipulation or to distribute further malicious content.

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://rlsheetmetalllc.net/uploads/1/3/0/6/130622110/130622110.html#principales+personajes+de+la+literatura+en+el+renacimiento
    • http://ankezimmermann.ca/uploads/1/3/0/8/130814562/243119.pdf
    • http://mail.writeituseit.com/uploads/1/3/0/2/130272470/e142b0db9.pdf
    • http://yuckyuckno.com/uploads/1/3/0/6/130603819/2b4fd0.pdf
    • http://mesquesabons.com/uploads/1/3/0/6/130639800/4e1017806c5.pdf
    • http://biancaboshoffinc.com/uploads/1/3/0/6/130604198/mujewovetobiro_rogafokusadef_zajakidukik_zixum.pdf
    • http://shantarassoapandcandlecompany.com/uploads/1/3/0/5/130550960/vowinibugivawo.pdf
    • http://colyarjewelry.com/uploads/1/3/0/9/130969160/e131dfaab1.pdf
    • http://radiocuibullupiloralbi.net/uploads/1/3/0/7/130775540/xixazupakog_rixufelobuvazi_xuxobakavakuluj_kivunagu.pdf
    • http://www.gzapata-alma.com/uploads/1/3/0/2/130291438/d2acb8358198dd.pdf
    • http://geo-dron.com/uploads/1/3/0/4/130477036/kaposizesilom.pdf
    • http://thepreambleparty.com/uploads/1/3/0/6/130620142/tirobirepum_lemetupe.pdf
    • http://niakas.gr/uploads/1/3/0/6/130605111/wuwux.pdf
    • http://www.storetech.org/uploads/1/3/0/9/130969085/dusun.pdf
    • http://coolcollarsusa.com/uploads/1/3/1/0/131070719/9311103.pdf
    • http://wattlebirdhome.com/uploads/1/3/0/6/130605228/dixefojabulolejip.pdf
    • http://kimbrellawfirm.com/uploads/1/3/0/6/130620605/5153280.pdf
    • http://cwrwwtp.com/uploads/1/3/0/3/130379798/nitux_bajiparutem_felomekoferisup_vefadevejin.pdf
    • http://boldncreative.com/uploads/1/3/0/5/130539131/526643.pdf
    • http://alexandramortonart.com/uploads/1/3/0/6/130620928/2e99ecba838c614.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_off0000d734.bin
16ff7e8a72ff3c96a0c57b2c8783a3cb51ec64efc9bf05aa92c1b63357d5cd60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD734 10304 bytes

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