Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f4ba9b884990e1…

MALICIOUS

PDF

48.1 KB Created: 2020-03-26 06:14:20 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e7b7051be27d18e12ffef222e47a7df8 SHA-1: 6d5823e224a5ba46b018a6b4a530838898556c7f SHA-256: 18f4ba9b884990e1c55ab7f83ef781109fc51f75ba315c47414b73705ee5b37b
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The embedded URLs are likely used to direct users to malicious websites or for SEO spamming purposes. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user, potentially as part of a phishing or malware distribution scheme.

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://joshleephotojournalist.org/uploads/1/3/0/2/130287896/130287896.html#the+bridge+across+forever+review
    • http://mirrorspainthorses.canyonranchsporthorses.com/uploads/1/3/0/8/130874435/raxagebi_rejumod_lirufuli_pixowenesu.pdf
    • http://kehojamieli.com/uploads/1/3/0/6/130620804/zinigera.pdf
    • http://properproperty.org/uploads/1/3/0/6/130620280/76f50718a91f3c8.pdf
    • http://fashionmaven.store/uploads/1/3/0/5/130551417/faguzizatuxowisekij.pdf
    • http://www.patricktoole.com/uploads/1/3/0/5/130544898/novonobupivif-zuwatuluxulu-nagaradi-tesef.pdf
    • http://ccanclegacyshootout.com/uploads/1/3/0/5/130589033/xofinewenoniniz.pdf
    • http://mail.newhopeballpark.com/uploads/1/3/0/5/130589416/retulogex.pdf
    • http://abrolhoslandscaping.com.au/uploads/1/3/0/4/130478205/c377b929cb.pdf
    • http://kylandarnell.com/uploads/1/3/0/5/130543134/ae29f872.pdf
    • http://sacredsecretskincare.org/uploads/1/3/0/6/130620283/loponukukorivikodob.pdf
    • http://jimmyschultz.com/uploads/1/3/0/5/130539934/195092.pdf
    • http://mail.etclb.com/uploads/1/3/0/6/130639784/aa3f33.pdf
    • http://counselors.playcollegesports.com/uploads/1/3/0/7/130776403/ravuwanawube.pdf
    • http://jayatherton.com/uploads/1/3/0/7/130775848/5581800.pdf
    • http://www.fjuadcamp.com/uploads/1/3/0/2/130272318/vebulibiravidovure.pdf
    • http://novamotorshaiti.com/uploads/1/3/0/6/130604350/fitorofozimubaj_dabami_peposukukag_ginuf.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c19.bin
05ef4412f2677434e041518bcfdf9ffec30dad12534575adec7c46b17bc89fa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C19 8584 bytes
font_01_sfnt_off00009c99.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C99 16036 bytes

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