Malicious PDF — malware analysis report

Static analysis result for SHA-256 56451a4153f1e548…

MALICIOUS

PDF

143.0 KB Created: 2020-03-12 09:52:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 89a7988033c7e4b767e93bbd5b7f57e8 SHA-1: 41077c3b20d40e3dd1083ad0e2cd6216aebacaed SHA-256: 56451a4153f1e54830d1d42be93b8350b4f80e8188a29c8e633edb22f80ec7df
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content indirectly. The heuristic PDF_SEO_LINK_FARM specifically flags this pattern, suggesting a potential SEO manipulation or a distribution network for malware. No scripts were extracted from this sample, limiting the ability to determine the exact payload or execution method.

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://kenraye.net/uploads/1/3/0/2/130288430/130288430.html#adsorption+journal+abbreviation
    • http://www.aliabucciarelli.com/uploads/1/3/0/5/130539202/43f700e4ce50.pdf
    • http://homelesspetslifeline.com/uploads/1/3/0/8/130873758/vadugakujil_xolibakofanopem_sagizexaw_kisegoxag.pdf
    • http://www.100menrgv.com/uploads/1/3/0/2/130271117/dukaxarosusozopase.pdf
    • http://naturalmusicmarketing.net/uploads/1/3/0/2/130289386/suxexezif_kuxudofure_bonumaw.pdf
    • http://narcsandco.com/uploads/1/3/0/5/130544132/tixukezigipu.pdf
    • http://neverwhisper.com/uploads/1/3/0/5/130589158/a7c4481a9.pdf
    • http://nomadel.com/uploads/1/3/0/4/130476216/tutokuxop-ferupoxo-xobop.pdf
    • http://xinshijiguojiyule.br3h.com/uploads/1/3/0/4/130476492/9aaff0209f6f3.pdf
    • http://bakersfieldbreakoutzone.com/uploads/1/3/0/7/130775851/salipo-zebadudesiza-nowawidi.pdf
    • http://782hustle.com/uploads/1/3/0/6/130640194/fowajeji.pdf
    • http://soilstewards.com/uploads/1/3/0/4/130435819/fevezovujazipigina.pdf
    • http://mail.newlifeduarte.org/uploads/1/3/0/6/130604646/5303798.pdf
    • http://cwbcellijay.org/uploads/1/3/0/7/130776699/vatunuwek_jufom_goredopere_sifizija.pdf
    • http://pawspharm.com/uploads/1/3/0/6/130621790/3238426.pdf
    • http://romanacoutureshop.com/uploads/1/3/0/7/130776823/kexikupasikola.pdf
    • http://mrcrosbyswebsite.com/uploads/1/3/0/6/130639729/563376.pdf
    • http://padeljobs.org/uploads/1/3/0/4/130483322/fikagofapu.pdf
    • http://farmboy.press/uploads/1/3/0/3/130324119/mimepavixulidegaz.pdf
    • http://mrlapta.com/uploads/1/3/0/7/130739904/3e0a3.pdf
    • http://buycommercialplaygroundequipment.com/uploads/1/3/0/4/130488993/8753323.pdf
    • http://hostmaster.runningadventures.uk/uploads/1/3/0/9/130969731/fabazavexenewu-gimekidagod-fotud-jusuwujawalose.pdf
    • http://new.numenaturalsoap.com/uploads/1/3/0/2/130272500/bapemusowenawuponemi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001125d.bin
7594957db40f1c3994eb35bd6a69755fdbfa63158bd526df9653085e38941246
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1125D 92456 bytes
font_00_sfnt_off0000ef82.bin
7a61cbf45c2568982ea306ce2c7fe8866182a7853130f49f2604bd84ceb4520c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF82 9268 bytes
font_02_sfnt_off000223b5.bin
bb66d78edca8aa75a8db461931e44ad6eab12e4cd439df836d92d13c6ef6c22d
pdf-font-stream PDF embedded font (sfnt) at offset 0x223B5 2668 bytes