Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b64e5177b7d4de…

MALICIOUS

PDF

42.2 KB Created: 2020-03-31 00:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 626effc15d3a96297a5f30c3af6cab3a SHA-1: 08059323c783f2ea267c62c55dd6849ea6f6968b SHA-256: 03b64e5177b7d4de5eaa0f9711f5c8a60578f6680b5bf95f8f5f3755c5d12732
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary link, 'http://tartelaine.com/uploads/1/3/0/6/130603890/130603890.html#usps+priority+mail+tracking+without+number', suggests a lure related to package tracking. The sheer volume of links points towards a link farm or SEO manipulation tactic, rather than legitimate content. No scripts were extracted from this sample.

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://tartelaine.com/uploads/1/3/0/6/130603890/130603890.html#usps+priority+mail+tracking+without+number
    • http://valentelawgroup.com/uploads/1/3/0/7/130776254/5a807ad.pdf
    • http://anotherhunnygoddessproduction.com/uploads/1/3/0/4/130488839/jinofi.pdf
    • http://brixhamcollege.com/uploads/1/3/0/5/130588913/3651926.pdf
    • http://thejupiterrevival.com/uploads/1/3/1/3/131398095/xulura.pdf
    • http://mybigfatgujjuwedding.com/uploads/1/3/0/4/130435555/piwalizepupuleg-zuwigurobipa-pagixo-wokezikemitir.pdf
    • http://shanahanagency.com/uploads/1/3/0/3/130323889/wurujifekunefakijufo.pdf
    • http://breadchicago.com/uploads/1/3/0/7/130776657/vizoxadinawo.pdf
    • http://guitarlessonsredding.com/uploads/1/3/0/7/130776183/jekaler_viziruxenit_demolin.pdf
    • http://villamimpibali.com/uploads/1/3/1/1/131163983/39693.pdf
    • http://cheyennecoffeeco.com/uploads/1/3/0/4/130477663/vutenuwam_mafusudijegewuk_wiwiwixiluzu_puwevaxale.pdf
    • http://cloudapitool.com/uploads/1/3/1/4/131408666/pifejibofuvogerozu.pdf
    • http://myconcealedcarry.net/uploads/1/3/0/5/130588545/naguxedusageropap.pdf
    • http://nizkedane.com/uploads/1/3/1/4/131438432/fazivuxo.pdf
    • http://powerfulchange.org/uploads/1/3/0/7/130739120/127128.pdf
    • http://writedownonthefarm.com/uploads/1/3/0/2/130274304/fevako_fuxedavikenota.pdf
    • http://earthmammablog.com/uploads/1/3/0/4/130488288/dafabafo.pdf
    • http://jeffsrodgers.com/uploads/1/3/0/5/130545278/7824848.pdf
    • http://impact-jj.com/uploads/1/3/0/6/130604583/4125336.pdf
    • http://doubleedgedswordministry.com/uploads/1/3/1/1/131164164/895763.pdf
    • http://fernandezacessorios.com/uploads/1/3/1/3/131379759/kovomelixinuvo.pdf
    • http://talentinthefield.com/uploads/1/3/0/8/130815097/fenajavuri.pdf
    • http://accessiblechef.org/uploads/1/3/0/5/130551898/c39d158f293a.pdf
    • http://100boysofcode.org/uploads/1/3/0/8/130874524/fuzevaniwil_fomot_jutow.pdf
    • http://depilatsioonmeestele.ee/uploads/1/3/0/8/130874429/1c19c7ef3c2153e.pdf
    • http://travcaru.com/uploads/1/3/1/3/131379540/zefirixim.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_off0000780c.bin
816b094b7d885d2b665a5fd693b277fa94ac5e698a384418728083952175dabf
pdf-font-stream PDF embedded font (sfnt) at offset 0x780C 9108 bytes