Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c80d2c9d4fafa23…

MALICIOUS

PDF

37.2 KB Created: 2020-03-14 16:51:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ef2bb3256f5f4d8a8ceefa580b4ae152 SHA-1: b5d0cb7ad34e2a05bc11c7f04a42fd28e63d4709 SHA-256: 2c80d2c9d4fafa23080305851fa3cca24047233617c3b992603bab5a858ed45a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links to various domains, a technique commonly used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. The document body, though partially corrupted, contains a reference to a 'florida sunshine law manual 2019' and an associated URL, suggesting a lure to disguise the malicious intent.

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://toyota-trd-super-power-trd.com/uploads/1/3/0/2/130289603/130289603.html#florida+sunshine+law+manual+2019
    • http://roaringforkbiomass.org/uploads/1/3/0/2/130289482/lujoperijodawokeze.pdf
    • http://shanxunwuxianluyou.f18.ebkf.org/uploads/1/3/0/7/130775370/5215548.pdf
    • http://www.936-mulchin.net/uploads/1/3/0/4/130476887/7ca6dc8dce2.pdf
    • http://izharudeen.com/uploads/1/3/0/6/130621937/1510521.pdf
    • http://ellawatkinsactor.com/uploads/1/3/0/7/130775834/rosilipogimexesolufe.pdf
    • http://portlandcbdhoney.com/uploads/1/3/0/6/130621163/ruzoruzopeno.pdf
    • http://mypointmaps.com/uploads/1/3/0/7/130775309/kobigot.pdf
    • http://stormfilmsperu.com/uploads/1/3/0/7/130775619/moruxinefas_fofijimunapiv_fagex.pdf
    • http://auntyneighbor.com/uploads/1/3/0/6/130640023/6887300.pdf
    • http://911bailbondsla.com/uploads/1/3/0/4/130483499/7ed87512.pdf
    • http://personaltraining.smadojo.com/uploads/1/3/0/6/130639837/mepukaneja-zufow.pdf
    • http://in-flame.org/uploads/1/3/0/4/130476143/pupuzunogukabi.pdf
    • http://pdxpersonalinjurylaw.com/uploads/1/3/0/5/130551788/9490935.pdf
    • http://govanmbeki.com/uploads/1/3/0/7/130776409/63d747.pdf
    • http://sunnylanefarmaz.com/uploads/1/3/0/4/130483879/jamad_mobozubasu_zivagagurifoki_gogareraberet.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_off000069eb.bin
11478243dc024522f24b24643abecfc807d71907884331e3c560c81137fa2e55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EB 7180 bytes

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